75 MOST IMP Maths ✅ Square Roots & Cube Roots Questions | Navodaya, Sainik, RMS Class 6/9 🔥 — Quiz questions and answers

समाप्त क्विज के प्रश्न और उत्तर · Completed quiz practice

Question 1

What is the square of 94?

94 का वर्ग क्या है?

  1. 8936 / 8936
  2. 8826 / 8826
  3. 8836 / 8836
  4. 8736 / 8736

Correct answer / सही उत्तर: C — 8836

∵ The number is 94 → $94^2 = 94 \times 94$ → $94 = 90 + 4$ → $(90 + 4)^2 = 8100 + 720 + 16$ ∴ $94^2 = 8836$

∵ संख्या 94 है → $94^2 = 94 \times 94$ → $94 = 90 + 4$ → $(90 + 4)^2 = 8100 + 720 + 16$ ∴ $94^2 = 8836

Question 2

What is the square of 67?

67 का वर्ग क्या है?

  1. 4389 / 4389
  2. 4479 / 4479
  3. 4489 / 4489
  4. 4589 / 4589

Correct answer / सही उत्तर: C — 4489

∵ The number is 67 → $67^2 = 67 \times 67$ → $67 = 60 + 7$ → $(60 + 7)^2 = 3600 + 840 + 49$ ∴ $67^2 = 4489$

∵ संख्या 67 है → $67^2 = 67 \times 67$ → $67 = 60 + 7$ → $(60 + 7)^2 = 3600 + 840 + 49$ ∴ $67^2 = 4489

Question 3

What is the square of 56?

56 का वर्ग क्या है?

  1. 3236 / 3236
  2. 3126 / 3126
  3. 3036 / 3036
  4. 3136 / 3136

Correct answer / सही उत्तर: D — 3136

∵ The number is 56 → $56^2 = 56 \times 56$ → $56 = 50 + 6$ → $(50 + 6)^2 = 2500 + 600 + 36$ ∴ $56^2 = 3136$

∵ संख्या 56 है → $56^2 = 56 \times 56$ → $56 = 50 + 6$ → $(50 + 6)^2 = 2500 + 600 + 36$ ∴ $56^2 = 3136

Question 4

What is the square of 92?

92 का वर्ग क्या है?

  1. 8364 / 8364
  2. 8464 / 8464
  3. 8564 / 8564
  4. 8454 / 8454

Correct answer / सही उत्तर: B — 8464

∵ The number is 92 → $92^2 = 92 \times 92$ → $92 = 90 + 2$ → $(90 + 2)^2 = 8100 + 360 + 4$ ∴ $92^2 = 8464$

∵ संख्या 92 है → $92^2 = 92 \times 92$ → $92 = 90 + 2$ → $(90 + 2)^2 = 8100 + 360 + 4$ ∴ $92^2 = 8464

Question 5

What is the square of 81?

81 का वर्ग क्या है?

  1. 6551 / 6551
  2. 6561 / 6561
  3. 6461 / 6461
  4. 6661 / 6661

Correct answer / सही उत्तर: B — 6561

∵ The number is 81 → $81^2 = 81 \times 81$ → $81 = 80 + 1$ → $(80 + 1)^2 = 6400 + 160 + 1$ ∴ $81^2 = 6561$

∵ संख्या 81 है → $81^2 = 81 \times 81$ → $81 = 80 + 1$ → $(80 + 1)^2 = 6400 + 160 + 1$ ∴ $81^2 = 6561

Question 6

What is the square of 46?

46 का वर्ग क्या है?

  1. 2116 / 2116
  2. 2216 / 2216
  3. 2016 / 2016
  4. 2106 / 2106

Correct answer / सही उत्तर: A — 2116

∵ The number is 46 → $46^2 = 46 \times 46$ → $46 = 50 - 4$ → $(50 - 4)^2 = 2500 - 400 + 16$ ∴ $46^2 = 2116$

∵ संख्या 46 है → $46^2 = 46 \times 46$ → $46 = 50 - 4$ → $(50 - 4)^2 = 2500 - 400 + 16$ ∴ $46^2 = 2116

Question 7

What is the square of 82?

82 का वर्ग क्या है?

  1. 6714 / 6714
  2. 6824 / 6824
  3. 6624 / 6624
  4. 6724 / 6724

Correct answer / सही उत्तर: D — 6724

∵ The number is 82 → $82^2 = 82 \times 82$ → $82 = 80 + 2$ → $(80 + 2)^2 = 6400 + 320 + 4$ ∴ $82^2 = 6724$

∵ संख्या 82 है → $82^2 = 82 \times 82$ → $82 = 80 + 2$ → $(80 + 2)^2 = 6400 + 320 + 4$ ∴ $82^2 = 6724

Question 8

What is the square of 42?

42 का वर्ग क्या है?

  1. 1864 / 1864
  2. 1664 / 1664
  3. 1754 / 1754
  4. 1764 / 1764

Correct answer / सही उत्तर: D — 1764

∵ The number is 42 → $42^2 = 42 \times 42$ → $42 = 50 - 8$ → $(50 - 8)^2 = 2500 - 800 + 64$ ∴ $42^2 = 1764$

∵ संख्या 42 है → $42^2 = 42 \times 42$ → $42 = 50 - 8$ → $(50 - 8)^2 = 2500 - 800 + 64$ ∴ $42^2 = 1764

Question 9

What is the square of 49?

49 का वर्ग क्या है?

  1. 2501 / 2501
  2. 2301 / 2301
  3. 2401 / 2401
  4. 2391 / 2391

Correct answer / सही उत्तर: C — 2401

∵ The number is 49 → $49^2 = 49 \times 49$ → $49 = 50 - 1$ → $(50 - 1)^2 = 2500 - 100 + 1$ ∴ $49^2 = 2401$

∵ संख्या 49 है → $49^2 = 49 \times 49$ → $49 = 50 - 1$ → $(50 - 1)^2 = 2500 - 100 + 1$ ∴ $49^2 = 2401

Question 10

What is the square of 98?

98 का वर्ग क्या है?

  1. 9504 / 9504
  2. 9704 / 9704
  3. 9604 / 9604
  4. 9594 / 9594

Correct answer / सही उत्तर: C — 9604

∵ The number is 98 → $98^2 = 98 \times 98$ → $98 = 90 + 8$ → $(90 + 8)^2 = 8100 + 1440 + 64$ ∴ $98^2 = 9604$

∵ संख्या 98 है → $98^2 = 98 \times 98$ → $98 = 90 + 8$ → $(90 + 8)^2 = 8100 + 1440 + 64$ ∴ $98^2 = 9604

Question 11

What is the square of 85?

85 का वर्ग क्या है?

  1. 7215 / 7215
  2. 7225 / 7225
  3. 7125 / 7125
  4. 7325 / 7325

Correct answer / सही उत्तर: B — 7225

∵ The number is 85 → $85^2 = 85 \times 85$ → $85 = 80 + 5$ → $(80 + 5)^2 = 6400 + 800 + 25$ ∴ $85^2 = 7225$

∵ संख्या 85 है → $85^2 = 85 \times 85$ → $85 = 80 + 5$ → $(80 + 5)^2 = 6400 + 800 + 25$ ∴ $85^2 = 7225

Question 12

What is the square of 62?

62 का वर्ग क्या है?

  1. 3844 / 3844
  2. 3744 / 3744
  3. 3834 / 3834
  4. 3944 / 3944

Correct answer / सही उत्तर: A — 3844

∵ The number is 62 → $62^2 = 62 \times 62$ → $62 = 60 + 2$ → $(60 + 2)^2 = 3600 + 240 + 4$ ∴ $62^2 = 3844$

∵ संख्या 62 है → $62^2 = 62 \times 62$ → $62 = 60 + 2$ → $(60 + 2)^2 = 3600 + 240 + 4$ ∴ $62^2 = 3844

Question 13

What is the square of 47?

47 का वर्ग क्या है?

  1. 2209 / 2209
  2. 2199 / 2199
  3. 2309 / 2309
  4. 2109 / 2109

Correct answer / सही उत्तर: A — 2209

∵ The number is 47 → $47^2 = 47 \times 47$ → $47 = 50 - 3$ → $(50 - 3)^2 = 2500 - 300 + 9$ ∴ $47^2 = 2209$

∵ संख्या 47 है → $47^2 = 47 \times 47$ → $47 = 50 - 3$ → $(50 - 3)^2 = 2500 - 300 + 9$ ∴ $47^2 = 2209

Question 14

What is the value of 88 squared?

88 के वर्ग का मान क्या है?

  1. 7844 / 7844
  2. 7744 / 7744
  3. 7944 / 7944
  4. 7644 / 7644

Correct answer / सही उत्तर: B — 7744

∵ The number is 88 → $88^2 = 88 \times 88$ → $88 = 90 - 2$ → $(90 - 2)^2 = 8100 - 360 + 4$ ∴ $88^2 = 7744$

∵ संख्या 88 है → $88^2 = 88 \times 88$ → $88 = 90 - 2$ → $(90 - 2)^2 = 8100 - 360 + 4$ ∴ $88^2 = 7744$

Question 15

What is the square of 53?

53 का वर्ग क्या है?

  1. 2799 / 2799
  2. 2909 / 2909
  3. 2709 / 2709
  4. 2809 / 2809

Correct answer / सही उत्तर: D — 2809

∵ The number is 53 → $53^2 = 53 \times 53$ → $53 = 50 + 3$ → $(50 + 3)^2 = 2500 + 300 + 9$ ∴ $53^2 = 2809$

∵ संख्या 53 है → $53^2 = 53 \times 53$ → $53 = 50 + 3$ → $(50 + 3)^2 = 2500 + 300 + 9$ ∴ $53^2 = 2809

Question 16

What is the square of 92?

92 का वर्ग क्या है?

  1. 8454 / 8454
  2. 8364 / 8364
  3. 8564 / 8564
  4. 8464 / 8464

Correct answer / सही उत्तर: D — 8464

∵ The number is 92 → $92^2 = 92 \times 92$ → $92 = 90 + 2$ → $(90 + 2)^2 = 8100 + 360 + 4$ ∴ $92^2 = 8464$

∵ संख्या 92 है → $92^2 = 92 \times 92$ → $92 = 90 + 2$ → $(90 + 2)^2 = 8100 + 360 + 4$ ∴ $92^2 = 8464

Question 17

What is the square of 78?

78 का वर्ग क्या है?

  1. 6074 / 6074
  2. 5984 / 5984
  3. 6184 / 6184
  4. 6084 / 6084

Correct answer / सही उत्तर: D — 6084

∵ The number is 78 → $78^2 = 78 \times 78$ → $78 = 70 + 8$ → $(70 + 8)^2 = 4900 + 1120 + 64$ ∴ $78^2 = 6084$

∵ संख्या 78 है → $78^2 = 78 \times 78$ → $78 = 70 + 8$ → $(70 + 8)^2 = 4900 + 1120 + 64$ ∴ $78^2 = 6084

Question 18

What is the square of 87?

87 का वर्ग क्या है?

  1. 7569 / 7569
  2. 7469 / 7469
  3. 7559 / 7559
  4. 7669 / 7669

Correct answer / सही उत्तर: A — 7569

∵ The number is 87 → $87^2 = 87 \times 87$ → $87 = 80 + 7$ → $(80 + 7)^2 = 6400 + 1120 + 49$ ∴ $87^2 = 7569$

∵ संख्या 87 है → $87^2 = 87 \times 87$ → $87 = 80 + 7$ → $(80 + 7)^2 = 6400 + 1120 + 49$ ∴ $87^2 = 7569

Question 19

Calculate the square of 93.

93 के वर्ग की गणना कीजिए।

  1. 8649 / 8649
  2. 8449 / 8449
  3. 8549 / 8549
  4. 8749 / 8749

Correct answer / सही उत्तर: A — 8649

∵ The number is 93 → $93^2 = 93 \times 93$ → $93 = 90 + 3$ → $(90 + 3)^2 = 8100 + 540 + 9$ ∴ $93^2 = 8649$

∵ संख्या 93 है → $93^2 = 93 \times 93$ → $93 = 90 + 3$ → $(90 + 3)^2 = 8100 + 540 + 9$ ∴ $93^2 = 8649$ ```python def generate_q(q_num, number): sq = number ** 2 wrong1 = sq - 100 wrong2 = sq + 100 wrong3 = sq - 10 options = [wrong1, sq, wrong2, wrong3] options.sort() letters = ['A', 'B', 'C', 'D'] correct_idx = options.index(sq) correct_ans = letters[correct_idx] if number > 50: base = (number // 10) * 10 diff = number - base sign = "+" step1 = f"{base} + {diff}" step2 = f"({base} + {diff})^2 = {base**2} + {2*base*diff} + {diff**2}" else: base = ((number + 9) // 10) * 10 diff = base - number sign = "-" step1 = f"{base} - {diff}" step2 = f"({base} - {diff})^2 = {base**2} - {2*base*diff} + {diff**2}" out = f"Q{q_num}. What is the square of {number}?\n" out += f"//HINDI// {number} का वर्ग क्या है?\n\n" for i in range(4): out += f"({letters[i]}) {options[i]} /HINDI {options[i]}\n" out += f"\nIS_OPTION_BILINGUAL: YES\nIS_DIAGRAM: NO\nIS_OPTIONS_MISSING: NO\nPYQ: NO\nCORRECT_ANS: {correct_ans}\n\n" out += f"EXPLAINATION_IN_ENG:\n" out += f"∵ The number is {number}\n" out += f"→ ${number}^2 = {number} \\times {number}$\n" out += f"→ ${number} = {step1}$\n" out += f"→ ${step2}$\n" out += f"∴ ${number}^2 = {sq}$\n\n" out += f"EXPLAINATION_IN_HINDI:\n" out += f"∵ संख्या {number} है\n" out += f"→ ${number}^2 = {number} \\times {number}$\n" out += f"→ ${number} = {step1}$\n" out += f"→ ${step2}$\n" out += f"∴ ${number}^2 = {sq}\n" return out numbers = [84, 47, 56, 73, 91, 62, 49, 85, 53, 78, 64, 42, 98, 59, 87, 71, 46, 82, 67, 51, 95, 43, 79, 61, 89, 54, 74, 94, 66, 48] res = "" for i, n in enumerate(numbers): res += generate_q(i+6, n) + "\n" print(res) ``` ```text

Question 20

What is the square of 66?

66 का वर्ग क्या है?

  1. 4256 / 4256
  2. 4456 / 4456
  3. 4346 / 4346
  4. 4356 / 4356

Correct answer / सही उत्तर: D — 4356

∵ The number is 66 → $66^2 = 66 \times 66$ → $66 = 60 + 6$ → $(60 + 6)^2 = 3600 + 720 + 36$ ∴ $66^2 = 4356$

∵ संख्या 66 है → $66^2 = 66 \times 66$ → $66 = 60 + 6$ → $(60 + 6)^2 = 3600 + 720 + 36$ ∴ $66^2 = 4356

Question 21

What is the square of 95?

95 का वर्ग क्या है?

  1. 8925 / 8925
  2. 9025 / 9025
  3. 9125 / 9125
  4. 9015 / 9015

Correct answer / सही उत्तर: B — 9025

∵ The number is 95 → $95^2 = 95 \times 95$ → $95 = 90 + 5$ → $(90 + 5)^2 = 8100 + 900 + 25$ ∴ $95^2 = 9025$

∵ संख्या 95 है → $95^2 = 95 \times 95$ → $95 = 90 + 5$ → $(90 + 5)^2 = 8100 + 900 + 25$ ∴ $95^2 = 9025

Question 22

What is the square of 97?

97 का वर्ग क्या है?

  1. 9809 / 9809
  2. 9609 / 9609
  3. 9409 / 9409
  4. 9209 / 9209

Correct answer / सही उत्तर: C — 9409

∵ The number is 97 → $97^2 = 97 \times 97$ → $97 = 100 - 3$ → $(100 - 3)^2 = 10000 - 600 + 9$ ∴ $97^2 = 9409$

∵ संख्या 97 है → $97^2 = 97 \times 97$ → $97 = 100 - 3$ → $(100 - 3)^2 = 10000 - 600 + 9$ ∴ $97^2 = 9409$

Question 23

What is the square of 49?

49 का वर्ग क्या है?

  1. 2401 / 2401
  2. 2391 / 2391
  3. 2501 / 2501
  4. 2301 / 2301

Correct answer / सही उत्तर: A — 2401

∵ The number is 49 → $49^2 = 49 \times 49$ → $49 = 50 - 1$ → $(50 - 1)^2 = 2500 - 100 + 1$ ∴ $49^2 = 2401$

∵ संख्या 49 है → $49^2 = 49 \times 49$ → $49 = 50 - 1$ → $(50 - 1)^2 = 2500 - 100 + 1$ ∴ $49^2 = 2401

Question 24

What is the square of 62?

62 का वर्ग क्या है?

  1. 3944 / 3944
  2. 3744 / 3744
  3. 3844 / 3844
  4. 3834 / 3834

Correct answer / सही उत्तर: C — 3844

∵ The number is 62 → $62^2 = 62 \times 62$ → $62 = 60 + 2$ → $(60 + 2)^2 = 3600 + 240 + 4$ ∴ $62^2 = 3844$

∵ संख्या 62 है → $62^2 = 62 \times 62$ → $62 = 60 + 2$ → $(60 + 2)^2 = 3600 + 240 + 4$ ∴ $62^2 = 3844

Question 25

What is the square of 59?

59 का वर्ग क्या है?

  1. 3471 / 3471
  2. 3581 / 3581
  3. 3381 / 3381
  4. 3481 / 3481

Correct answer / सही उत्तर: D — 3481

∵ The number is 59 → $59^2 = 59 \times 59$ → $59 = 50 + 9$ → $(50 + 9)^2 = 2500 + 900 + 81$ ∴ $59^2 = 3481$

∵ संख्या 59 है → $59^2 = 59 \times 59$ → $59 = 50 + 9$ → $(50 + 9)^2 = 2500 + 900 + 81$ ∴ $59^2 = 3481

Question 26

What is the square of 81?

81 का वर्ग क्या है?

  1. 6561 / 6561
  2. 6551 / 6551
  3. 6661 / 6661
  4. 6461 / 6461

Correct answer / सही उत्तर: A — 6561

∵ The number is 81 → $81^2 = 81 \times 81$ → $81 = 80 + 1$ → $(80 + 1)^2 = 6400 + 160 + 1$ ∴ $81^2 = 6561$

∵ संख्या 81 है → $81^2 = 81 \times 81$ → $81 = 80 + 1$ → $(80 + 1)^2 = 6400 + 160 + 1$ ∴ $81^2 = 6561

Question 27

What is the square of 64?

64 का वर्ग क्या है?

  1. 4086 / 4086
  2. 3996 / 3996
  3. 4196 / 4196
  4. 4096 / 4096

Correct answer / सही उत्तर: D — 4096

∵ The number is 64 → $64^2 = 64 \times 64$ → $64 = 60 + 4$ → $(60 + 4)^2 = 3600 + 480 + 16$ ∴ $64^2 = 4096$

∵ संख्या 64 है → $64^2 = 64 \times 64$ → $64 = 60 + 4$ → $(60 + 4)^2 = 3600 + 480 + 16$ ∴ $64^2 = 4096

Question 28

What is the square of 42?

42 का वर्ग क्या है?

  1. 1864 / 1864
  2. 1664 / 1664
  3. 1754 / 1754
  4. 1764 / 1764

Correct answer / सही उत्तर: D — 1764

∵ The number is 42 → $42^2 = 42 \times 42$ → $42 = 50 - 8$ → $(50 - 8)^2 = 2500 - 800 + 64$ ∴ $42^2 = 1764$

∵ संख्या 42 है → $42^2 = 42 \times 42$ → $42 = 50 - 8$ → $(50 - 8)^2 = 2500 - 800 + 64$ ∴ $42^2 = 1764

Question 29

What is the square of 68?

68 का वर्ग क्या है?

  1. 4614 / 4614
  2. 4624 / 4624
  3. 4724 / 4724
  4. 4524 / 4524

Correct answer / सही उत्तर: B — 4624

∵ The number is 68 → $68^2 = 68 \times 68$ → $68 = 70 - 2$ → $(70 - 2)^2 = 4900 - 280 + 4$ ∴ $68^2 = 4624$

∵ संख्या 68 है → $68^2 = 68 \times 68$ → $68 = 70 - 2$ → $(70 - 2)^2 = 4900 - 280 + 4$ ∴ $68^2 = 4624

Question 30

What is the square of 57?

57 का वर्ग क्या है?

  1. 3249 / 3249
  2. 3149 / 3149
  3. 3239 / 3239
  4. 3349 / 3349

Correct answer / सही उत्तर: A — 3249

∵ The number is 57 → $57^2 = 57 \times 57$ → $57 = 60 - 3$ → $(60 - 3)^2 = 3600 - 360 + 9$ ∴ $57^2 = 3249$

∵ संख्या 57 है → $57^2 = 57 \times 57$ → $57 = 60 - 3$ → $(60 - 3)^2 = 3600 - 360 + 9$ ∴ $57^2 = 3249

Question 31

What is the square of 69?

69 का वर्ग क्या है?

  1. 4961 / 4961
  2. 4661 / 4661
  3. 4761 / 4761
  4. 4861 / 4861

Correct answer / सही उत्तर: C — 4761

∵ The number is 69 → $69^2 = 69 \times 69$ → $69 = 70 - 1$ → $(70 - 1)^2 = 4900 - 140 + 1$ ∴ $69^2 = 4761$

∵ संख्या 69 है → $69^2 = 69 \times 69$ → $69 = 70 - 1$ → $(70 - 1)^2 = 4900 - 140 + 1$ ∴ $69^2 = 4761$

Question 32

What is the square of 74?

74 का वर्ग क्या है?

  1. 5466 / 5466
  2. 5576 / 5576
  3. 5376 / 5376
  4. 5476 / 5476

Correct answer / सही उत्तर: D — 5476

∵ The number is 74 → $74^2 = 74 \times 74$ → $74 = 70 + 4$ → $(70 + 4)^2 = 4900 + 560 + 16$ ∴ $74^2 = 5476$

∵ संख्या 74 है → $74^2 = 74 \times 74$ → $74 = 70 + 4$ → $(70 + 4)^2 = 4900 + 560 + 16$ ∴ $74^2 = 5476

Question 33

What is the square of 89?

89 का वर्ग क्या है?

  1. 7821 / 7821
  2. 8021 / 8021
  3. 7921 / 7921
  4. 7911 / 7911

Correct answer / सही उत्तर: C — 7921

∵ The number is 89 → $89^2 = 89 \times 89$ → $89 = 80 + 9$ → $(80 + 9)^2 = 6400 + 1440 + 81$ ∴ $89^2 = 7921$

∵ संख्या 89 है → $89^2 = 89 \times 89$ → $89 = 80 + 9$ → $(80 + 9)^2 = 6400 + 1440 + 81$ ∴ $89^2 = 7921

Question 34

What is the square of 79?

79 का वर्ग क्या है?

  1. 6231 / 6231
  2. 6341 / 6341
  3. 6241 / 6241
  4. 6141 / 6141

Correct answer / सही उत्तर: C — 6241

∵ The number is 79 → $79^2 = 79 \times 79$ → $79 = 70 + 9$ → $(70 + 9)^2 = 4900 + 1260 + 81$ ∴ $79^2 = 6241$

∵ संख्या 79 है → $79^2 = 79 \times 79$ → $79 = 70 + 9$ → $(70 + 9)^2 = 4900 + 1260 + 81$ ∴ $79^2 = 6241

Question 35

What is the square of 57?

57 का वर्ग क्या है?

  1. 3239 / 3239
  2. 3349 / 3349
  3. 3149 / 3149
  4. 3249 / 3249

Correct answer / सही उत्तर: D — 3249

∵ The number is 57 → $57^2 = 57 \times 57$ → $57 = 60 - 3$ → $(60 - 3)^2 = 3600 - 360 + 9$ ∴ $57^2 = 3249$

∵ संख्या 57 है → $57^2 = 57 \times 57$ → $57 = 60 - 3$ → $(60 - 3)^2 = 3600 - 360 + 9$ ∴ $57^2 = 3249

Question 36

What is the square of 73?

73 का वर्ग क्या है?

  1. 5429 / 5429
  2. 5319 / 5319
  3. 5229 / 5229
  4. 5329 / 5329

Correct answer / सही उत्तर: D — 5329

∵ The number is 73 → $73^2 = 73 \times 73$ → $73 = 70 + 3$ → $(70 + 3)^2 = 4900 + 420 + 9$ ∴ $73^2 = 5329$

∵ संख्या 73 है → $73^2 = 73 \times 73$ → $73 = 70 + 3$ → $(70 + 3)^2 = 4900 + 420 + 9$ ∴ $73^2 = 5329

Question 37

What is the square of 48?

48 का वर्ग क्या है?

  1. 2304 / 2304
  2. 2204 / 2204
  3. 2294 / 2294
  4. 2404 / 2404

Correct answer / सही उत्तर: A — 2304

∵ The number is 48 → $48^2 = 48 \times 48$ → $48 = 50 - 2$ → $(50 - 2)^2 = 2500 - 200 + 4$ ∴ $48^2 = 2304$

∵ संख्या 48 है → $48^2 = 48 \times 48$ → $48 = 50 - 2$ → $(50 - 2)^2 = 2500 - 200 + 4$ ∴ $48^2 = 2304 ```python def generate_q(q_num, number): sq = number ** 2 wrong1 = sq - 100 wrong2 = sq + 100 wrong3 = sq - 10 options = [wrong1, sq, wrong2, wrong3] options.sort() letters = ['A', 'B', 'C', 'D'] correct_idx = options.index(sq) correct_ans = letters[correct_idx] if number > 50 and number not in [57, 68]: base = (number // 10) * 10 diff = number - base step1 = f"{base} + {diff}" step2 = f"({base} + {diff})^2 = {base**2} + {2*base*diff} + {diff**2}" else: base = ((number + 9) // 10) * 10 diff = base - number step1 = f"{base} - {diff}" step2 = f"({base} - {diff})^2 = {base**2} - {2*base*diff} + {diff**2}" out = f"Q{q_num}. What is the square of {number}?\n" out += f"//HINDI// {number} का वर्ग क्या है?\n\n" for i in range(4): out += f"({letters[i]}) {options[i]} /HINDI {options[i]}\n" out += f"\nIS_OPTION_BILINGUAL: YES\nIS_DIAGRAM: NO\nIS_OPTIONS_MISSING: NO\nPYQ: NO\nCORRECT_ANS: {correct_ans}\n\n" out += f"EXPLAINATION_IN_ENG:\n" out += f"∵ The number is {number}\n" out += f"→ ${number}^2 = {number} \\times {number}$\n" out += f"→ ${number} = {step1}$\n" out += f"→ ${step2}$\n" out += f"∴ ${number}^2 = {sq}$\n\n" out += f"EXPLAINATION_IN_HINDI:\n" out += f"∵ संख्या {number} है\n" out += f"→ ${number}^2 = {number} \\times {number}$\n" out += f"→ ${number} = {step1}$\n" out += f"→ ${step2}$\n" out += f"∴ ${number}^2 = {sq}\n" return out numbers = [81, 68, 57, 92, 75] res = "" for i, n in enumerate(numbers): res += generate_q(i+36, n) + "\n" print(res) ``` ```text

Question 38

What is the square of 75?

75 का वर्ग क्या है?

  1. 5625 / 5625
  2. 5725 / 5725
  3. 5615 / 5615
  4. 5525 / 5525

Correct answer / सही उत्तर: A — 5625

∵ The number is 75 → $75^2 = 75 \times 75$ → $75 = 70 + 5$ → $(70 + 5)^2 = 4900 + 700 + 25$ ∴ $75^2 = 5625$

∵ संख्या 75 है → $75^2 = 75 \times 75$ → $75 = 70 + 5$ → $(70 + 5)^2 = 4900 + 700 + 25$ ∴ $75^2 = 5625

Question 39

What is the square of 98?

98 का वर्ग क्या है?

  1. 9504 / 9504
  2. 9604 / 9604
  3. 9594 / 9594
  4. 9704 / 9704

Correct answer / सही उत्तर: B — 9604

∵ The number is 98 → $98^2 = 98 \times 98$ → $98 = 90 + 8$ → $(90 + 8)^2 = 8100 + 1440 + 64$ ∴ $98^2 = 9604$

∵ संख्या 98 है → $98^2 = 98 \times 98$ → $98 = 90 + 8$ → $(90 + 8)^2 = 8100 + 1440 + 64$ ∴ $98^2 = 9604

Question 40

What is the square of 54?

54 का वर्ग क्या है?

  1. 3016 / 3016
  2. 2816 / 2816
  3. 2916 / 2916
  4. 2906 / 2906

Correct answer / सही उत्तर: C — 2916

∵ The number is 54 → $54^2 = 54 \times 54$ → $54 = 50 + 4$ → $(50 + 4)^2 = 2500 + 400 + 16$ ∴ $54^2 = 2916$

∵ संख्या 54 है → $54^2 = 54 \times 54$ → $54 = 50 + 4$ → $(50 + 4)^2 = 2500 + 400 + 16$ ∴ $54^2 = 2916

Question 41

What is the square of 67?

67 का वर्ग क्या है?

  1. 4389 / 4389
  2. 4489 / 4489
  3. 4479 / 4479
  4. 4589 / 4589

Correct answer / सही उत्तर: B — 4489

∵ The number is 67 → $67^2 = 67 \times 67$ → $67 = 60 + 7$ → $(60 + 7)^2 = 3600 + 840 + 49$ ∴ $67^2 = 4489$

∵ संख्या 67 है → $67^2 = 67 \times 67$ → $67 = 60 + 7$ → $(60 + 7)^2 = 3600 + 840 + 49$ ∴ $67^2 = 4489

Question 42

What is the square of 91?

91 का वर्ग क्या है?

  1. 8381 / 8381
  2. 8281 / 8281
  3. 8181 / 8181
  4. 8271 / 8271

Correct answer / सही उत्तर: B — 8281

∵ The number is 91 → $91^2 = 91 \times 91$ → $91 = 90 + 1$ → $(90 + 1)^2 = 8100 + 180 + 1$ ∴ $91^2 = 8281$

∵ संख्या 91 है → $91^2 = 91 \times 91$ → $91 = 90 + 1$ → $(90 + 1)^2 = 8100 + 180 + 1$ ∴ $91^2 = 8281

Question 43

What is the square of 84?

84 का वर्ग क्या है?

  1. 6956 / 6956
  2. 7056 / 7056
  3. 7046 / 7046
  4. 7156 / 7156

Correct answer / सही उत्तर: B — 7056

∵ The number is 84 → $84^2 = 84 \times 84$ → $84 = 80 + 4$ → $(80 + 4)^2 = 6400 + 640 + 16$ ∴ $84^2 = 7056$

∵ संख्या 84 है → $84^2 = 84 \times 84$ → $84 = 80 + 4$ → $(80 + 4)^2 = 6400 + 640 + 16$ ∴ $84^2 = 7056

Question 44

What is the square of 61?

61 का वर्ग क्या है?

  1. 3621 / 3621
  2. 3821 / 3821
  3. 3721 / 3721
  4. 3711 / 3711

Correct answer / सही उत्तर: C — 3721

∵ The number is 61 → $61^2 = 61 \times 61$ → $61 = 60 + 1$ → $(60 + 1)^2 = 3600 + 120 + 1$ ∴ $61^2 = 3721$

∵ संख्या 61 है → $61^2 = 61 \times 61$ → $61 = 60 + 1$ → $(60 + 1)^2 = 3600 + 120 + 1$ ∴ $61^2 = 3721

Question 45

What is the square of 91?

91 का वर्ग क्या है?

  1. 8381 / 8381
  2. 8271 / 8271
  3. 8181 / 8181
  4. 8281 / 8281

Correct answer / सही उत्तर: D — 8281

∵ The number is 91 → $91^2 = 91 \times 91$ → $91 = 90 + 1$ → $(90 + 1)^2 = 8100 + 180 + 1$ ∴ $91^2 = 8281$

∵ संख्या 91 है → $91^2 = 91 \times 91$ → $91 = 90 + 1$ → $(90 + 1)^2 = 8100 + 180 + 1$ ∴ $91^2 = 8281

Question 46

What is the square of 73?

73 का वर्ग क्या है?

  1. 5229 / 5229
  2. 5319 / 5319
  3. 5329 / 5329
  4. 5429 / 5429

Correct answer / सही उत्तर: C — 5329

∵ The number is 73 → $73^2 = 73 \times 73$ → $73 = 70 + 3$ → $(70 + 3)^2 = 4900 + 420 + 9$ ∴ $73^2 = 5329$

∵ संख्या 73 है → $73^2 = 73 \times 73$ → $73 = 70 + 3$ → $(70 + 3)^2 = 4900 + 420 + 9$ ∴ $73^2 = 5329

Question 47

What is the square of 54?

54 का वर्ग क्या है?

  1. 2916 / 2916
  2. 2816 / 2816
  3. 3016 / 3016
  4. 2906 / 2906

Correct answer / सही उत्तर: A — 2916

∵ The number is 54 → $54^2 = 54 \times 54$ → $54 = 50 + 4$ → $(50 + 4)^2 = 2500 + 400 + 16$ ∴ $54^2 = 2916$

∵ संख्या 54 है → $54^2 = 54 \times 54$ → $54 = 50 + 4$ → $(50 + 4)^2 = 2500 + 400 + 16$ ∴ $54^2 = 2916

Question 48

What is the square of 95?

95 का वर्ग क्या है?

  1. 9015 / 9015
  2. 9125 / 9125
  3. 9025 / 9025
  4. 8925 / 8925

Correct answer / सही उत्तर: C — 9025

∵ The number is 95 → $95^2 = 95 \times 95$ → $95 = 90 + 5$ → $(90 + 5)^2 = 8100 + 900 + 25$ ∴ $95^2 = 9025$

∵ संख्या 95 है → $95^2 = 95 \times 95$ → $95 = 90 + 5$ → $(90 + 5)^2 = 8100 + 900 + 25$ ∴ $95^2 = 9025

Question 49

What is the square of 46?

46 का वर्ग क्या है?

  1. 2216 / 2216
  2. 2106 / 2106
  3. 2116 / 2116
  4. 2016 / 2016

Correct answer / सही उत्तर: C — 2116

∵ The number is 46 → $46^2 = 46 \times 46$ → $46 = 50 - 4$ → $(50 - 4)^2 = 2500 - 400 + 16$ ∴ $46^2 = 2116$

∵ संख्या 46 है → $46^2 = 46 \times 46$ → $46 = 50 - 4$ → $(50 - 4)^2 = 2500 - 400 + 16$ ∴ $46^2 = 2116

Question 50

What is the square of 89?

89 का वर्ग क्या है?

  1. 7921 / 7921
  2. 8021 / 8021
  3. 7821 / 7821
  4. 7911 / 7911

Correct answer / सही उत्तर: A — 7921

∵ The number is 89 → $89^2 = 89 \times 89$ → $89 = 80 + 9$ → $(80 + 9)^2 = 6400 + 1440 + 81$ ∴ $89^2 = 7921$

∵ संख्या 89 है → $89^2 = 89 \times 89$ → $89 = 80 + 9$ → $(80 + 9)^2 = 6400 + 1440 + 81$ ∴ $89^2 = 7921

Question 51

What is the square of 74?

74 का वर्ग क्या है?

  1. 5576 / 5576
  2. 5476 / 5476
  3. 5466 / 5466
  4. 5376 / 5376

Correct answer / सही उत्तर: B — 5476

∵ The number is 74 → $74^2 = 74 \times 74$ → $74 = 70 + 4$ → $(70 + 4)^2 = 4900 + 560 + 16$ ∴ $74^2 = 5476$

∵ संख्या 74 है → $74^2 = 74 \times 74$ → $74 = 70 + 4$ → $(70 + 4)^2 = 4900 + 560 + 16$ ∴ $74^2 = 5476

Question 52

What is the square of 66?

66 का वर्ग क्या है?

  1. 4346 / 4346
  2. 4356 / 4356
  3. 4456 / 4456
  4. 4256 / 4256

Correct answer / सही उत्तर: B — 4356

∵ The number is 66 → $66^2 = 66 \times 66$ → $66 = 60 + 6$ → $(60 + 6)^2 = 3600 + 720 + 36$ ∴ $66^2 = 4356$

∵ संख्या 66 है → $66^2 = 66 \times 66$ → $66 = 60 + 6$ → $(60 + 6)^2 = 3600 + 720 + 36$ ∴ $66^2 = 4356

Question 53

What is the square of 43?

43 का वर्ग क्या है?

  1. 1849 / 1849
  2. 1949 / 1949
  3. 1749 / 1749
  4. 1839 / 1839

Correct answer / सही उत्तर: A — 1849

∵ The number is 43 → $43^2 = 43 \times 43$ → $43 = 50 - 7$ → $(50 - 7)^2 = 2500 - 700 + 49$ ∴ $43^2 = 1849$

∵ संख्या 43 है → $43^2 = 43 \times 43$ → $43 = 50 - 7$ → $(50 - 7)^2 = 2500 - 700 + 49$ ∴ $43^2 = 1849

Question 54

What is the square of 82?

82 का वर्ग क्या है?

  1. 6724 / 6724
  2. 6824 / 6824
  3. 6714 / 6714
  4. 6624 / 6624

Correct answer / सही उत्तर: A — 6724

∵ The number is 82 → $82^2 = 82 \times 82$ → $82 = 80 + 2$ → $(80 + 2)^2 = 6400 + 320 + 4$ ∴ $82^2 = 6724$

∵ संख्या 82 है → $82^2 = 82 \times 82$ → $82 = 80 + 2$ → $(80 + 2)^2 = 6400 + 320 + 4$ ∴ $82^2 = 6724

Question 55

What is the square of 53?

53 का वर्ग क्या है?

  1. 2809 / 2809
  2. 2709 / 2709
  3. 2909 / 2909
  4. 2799 / 2799

Correct answer / सही उत्तर: A — 2809

∵ The number is 53 → $53^2 = 53 \times 53$ → $53 = 50 + 3$ → $(50 + 3)^2 = 2500 + 300 + 9$ ∴ $53^2 = 2809$

∵ संख्या 53 है → $53^2 = 53 \times 53$ → $53 = 50 + 3$ → $(50 + 3)^2 = 2500 + 300 + 9$ ∴ $53^2 = 2809

Question 56

What is the square of 75?

75 का वर्ग क्या है?

  1. 5525 / 5525
  2. 5725 / 5725
  3. 5625 / 5625
  4. 5615 / 5615

Correct answer / सही उत्तर: C — 5625

∵ The number is 75 → $75^2 = 75 \times 75$ → $75 = 70 + 5$ → $(70 + 5)^2 = 4900 + 700 + 25$ ∴ $75^2 = 5625$

∵ संख्या 75 है → $75^2 = 75 \times 75$ → $75 = 70 + 5$ → $(70 + 5)^2 = 4900 + 700 + 25$ ∴ $75^2 = 5625 ```

Question 57

What is the square of 51?

51 का वर्ग क्या है?

  1. 2701 / 2701
  2. 2501 / 2501
  3. 2591 / 2591
  4. 2601 / 2601

Correct answer / सही उत्तर: D — 2601

∵ The number is 51 → $51^2 = 51 \times 51$ → $51 = 50 + 1$ → $(50 + 1)^2 = 2500 + 100 + 1$ ∴ $51^2 = 2601$

∵ संख्या 51 है → $51^2 = 51 \times 51$ → $51 = 50 + 1$ → $(50 + 1)^2 = 2500 + 100 + 1$ ∴ $51^2 = 2601

Question 58

What is the square of 51?

51 का वर्ग क्या है?

  1. 2701 / 2701
  2. 2601 / 2601
  3. 2501 / 2501
  4. 2591 / 2591

Correct answer / सही उत्तर: B — 2601

∵ The number is 51 → $51^2 = 51 \times 51$ → $51 = 50 + 1$ → $(50 + 1)^2 = 2500 + 100 + 1$ ∴ $51^2 = 2601$

∵ संख्या 51 है → $51^2 = 51 \times 51$ → $51 = 50 + 1$ → $(50 + 1)^2 = 2500 + 100 + 1$ ∴ $51^2 = 2601

Question 59

What is the square of 71?

71 का वर्ग क्या है?

  1. 5041 / 5041
  2. 4941 / 4941
  3. 5141 / 5141
  4. 5031 / 5031

Correct answer / सही उत्तर: A — 5041

∵ The number is 71 → $71^2 = 71 \times 71$ → $71 = 70 + 1$ → $(70 + 1)^2 = 4900 + 140 + 1$ ∴ $71^2 = 5041$

∵ संख्या 71 है → $71^2 = 71 \times 71$ → $71 = 70 + 1$ → $(70 + 1)^2 = 4900 + 140 + 1$ ∴ $71^2 = 5041

Question 60

What is the square of 84?

84 का वर्ग क्या है?

  1. 7056 / 7056
  2. 7156 / 7156
  3. 6956 / 6956
  4. 7046 / 7046

Correct answer / सही उत्तर: A — 7056

∵ The number is 84 → $84^2 = 84 \times 84$ → $84 = 80 + 4$ → $(80 + 4)^2 = 6400 + 640 + 16$ ∴ $84^2 = 7056$

∵ संख्या 84 है → $84^2 = 84 \times 84$ → $84 = 80 + 4$ → $(80 + 4)^2 = 6400 + 640 + 16$ ∴ $84^2 = 7056

Question 61

What is the square of 94?

94 का वर्ग क्या है?

  1. 8736 / 8736
  2. 8836 / 8836
  3. 8936 / 8936
  4. 8826 / 8826

Correct answer / सही उत्तर: B — 8836

∵ The number is 94 → $94^2 = 94 \times 94$ → $94 = 90 + 4$ → $(90 + 4)^2 = 8100 + 720 + 16$ ∴ $94^2 = 8836$

∵ संख्या 94 है → $94^2 = 94 \times 94$ → $94 = 90 + 4$ → $(90 + 4)^2 = 8100 + 720 + 16$ ∴ $94^2 = 8836

Question 62

What is the square of 61?

61 का वर्ग क्या है?

  1. 3721 / 3721
  2. 3621 / 3621
  3. 3711 / 3711
  4. 3821 / 3821

Correct answer / सही उत्तर: A — 3721

∵ The number is 61 → $61^2 = 61 \times 61$ → $61 = 60 + 1$ → $(60 + 1)^2 = 3600 + 120 + 1$ ∴ $61^2 = 3721$

∵ संख्या 61 है → $61^2 = 61 \times 61$ → $61 = 60 + 1$ → $(60 + 1)^2 = 3600 + 120 + 1$ ∴ $61^2 = 3721

Question 63

What is the square of 43?

43 का वर्ग क्या है?

  1. 1949 / 1949
  2. 1839 / 1839
  3. 1849 / 1849
  4. 1749 / 1749

Correct answer / सही उत्तर: C — 1849

∵ The number is 43 → $43^2 = 43 \times 43$ → $43 = 50 - 7$ → $(50 - 7)^2 = 2500 - 700 + 49$ ∴ $43^2 = 1849$

∵ संख्या 43 है → $43^2 = 43 \times 43$ → $43 = 50 - 7$ → $(50 - 7)^2 = 2500 - 700 + 49$ ∴ $43^2 = 1849

Question 64

What is the square of 56?

56 का वर्ग क्या है?

  1. 3126 / 3126
  2. 3036 / 3036
  3. 3136 / 3136
  4. 3236 / 3236

Correct answer / सही उत्तर: C — 3136

∵ The number is 56 → $56^2 = 56 \times 56$ → $56 = 50 + 6$ → $(50 + 6)^2 = 2500 + 600 + 36$ ∴ $56^2 = 3136$

∵ संख्या 56 है → $56^2 = 56 \times 56$ → $56 = 50 + 6$ → $(50 + 6)^2 = 2500 + 600 + 36$ ∴ $56^2 = 3136

Question 65

What is the square of 79?

79 का वर्ग क्या है?

  1. 6231 / 6231
  2. 6241 / 6241
  3. 6141 / 6141
  4. 6341 / 6341

Correct answer / सही उत्तर: B — 6241

∵ The number is 79 → $79^2 = 79 \times 79$ → $79 = 70 + 9$ → $(70 + 9)^2 = 4900 + 1260 + 81$ ∴ $79^2 = 6241$

∵ संख्या 79 है → $79^2 = 79 \times 79$ → $79 = 70 + 9$ → $(70 + 9)^2 = 4900 + 1260 + 81$ ∴ $79^2 = 6241

Question 66

Find the square of 76.

76 का वर्ग ज्ञात कीजिए।

  1. 5876 / 5876
  2. 5976 / 5976
  3. 5776 / 5776
  4. 5676 / 5676

Correct answer / सही उत्तर: C — 5776

∵ The number is 76 → $76^2 = 76 \times 76$ → $76 = 70 + 6$ → $(70 + 6)^2 = 4900 + 840 + 36$ ∴ $76^2 = 5776$

∵ संख्या 76 है → $76^2 = 76 \times 76$ → $76 = 70 + 6$ → $(70 + 6)^2 = 4900 + 840 + 36$ ∴ $76^2 = 5776$

Question 67

What is the square of 71?

71 का वर्ग क्या है?

  1. 5141 / 5141
  2. 5041 / 5041
  3. 5031 / 5031
  4. 4941 / 4941

Correct answer / सही उत्तर: B — 5041

∵ The number is 71 → $71^2 = 71 \times 71$ → $71 = 70 + 1$ → $(70 + 1)^2 = 4900 + 140 + 1$ ∴ $71^2 = 5041$

∵ संख्या 71 है → $71^2 = 71 \times 71$ → $71 = 70 + 1$ → $(70 + 1)^2 = 4900 + 140 + 1$ ∴ $71^2 = 5041

Question 68

What is the square of 78?

78 का वर्ग क्या है?

  1. 6184 / 6184
  2. 6084 / 6084
  3. 6074 / 6074
  4. 5984 / 5984

Correct answer / सही उत्तर: B — 6084

∵ The number is 78 → $78^2 = 78 \times 78$ → $78 = 70 + 8$ → $(70 + 8)^2 = 4900 + 1120 + 64$ ∴ $78^2 = 6084$

∵ संख्या 78 है → $78^2 = 78 \times 78$ → $78 = 70 + 8$ → $(70 + 8)^2 = 4900 + 1120 + 64$ ∴ $78^2 = 6084

Question 69

What is the square of 59?

59 का वर्ग क्या है?

  1. 3471 / 3471
  2. 3581 / 3581
  3. 3481 / 3481
  4. 3381 / 3381

Correct answer / सही उत्तर: C — 3481

∵ The number is 59 → $59^2 = 59 \times 59$ → $59 = 50 + 9$ → $(50 + 9)^2 = 2500 + 900 + 81$ ∴ $59^2 = 3481$

∵ संख्या 59 है → $59^2 = 59 \times 59$ → $59 = 50 + 9$ → $(50 + 9)^2 = 2500 + 900 + 81$ ∴ $59^2 = 3481

Question 70

What is the square of 64?

64 का वर्ग क्या है?

  1. 3996 / 3996
  2. 4096 / 4096
  3. 4086 / 4086
  4. 4196 / 4196

Correct answer / सही उत्तर: B — 4096

∵ The number is 64 → $64^2 = 64 \times 64$ → $64 = 60 + 4$ → $(60 + 4)^2 = 3600 + 480 + 16$ ∴ $64^2 = 4096$

∵ संख्या 64 है → $64^2 = 64 \times 64$ → $64 = 60 + 4$ → $(60 + 4)^2 = 3600 + 480 + 16$ ∴ $64^2 = 4096

Question 71

What is the square of 87?

87 का वर्ग क्या है?

  1. 7569 / 7569
  2. 7469 / 7469
  3. 7669 / 7669
  4. 7559 / 7559

Correct answer / सही उत्तर: A — 7569

∵ The number is 87 → $87^2 = 87 \times 87$ → $87 = 80 + 7$ → $(80 + 7)^2 = 6400 + 1120 + 49$ ∴ $87^2 = 7569$

∵ संख्या 87 है → $87^2 = 87 \times 87$ → $87 = 80 + 7$ → $(80 + 7)^2 = 6400 + 1120 + 49$ ∴ $87^2 = 7569

Question 72

What is the square of 68?

68 का वर्ग क्या है?

  1. 4524 / 4524
  2. 4724 / 4724
  3. 4624 / 4624
  4. 4614 / 4614

Correct answer / सही उत्तर: C — 4624

∵ The number is 68 → $68^2 = 68 \times 68$ → $68 = 70 - 2$ → $(70 - 2)^2 = 4900 - 280 + 4$ ∴ $68^2 = 4624$

∵ संख्या 68 है → $68^2 = 68 \times 68$ → $68 = 70 - 2$ → $(70 - 2)^2 = 4900 - 280 + 4$ ∴ $68^2 = 4624

Question 73

What is the square of 48?

48 का वर्ग क्या है?

  1. 2294 / 2294
  2. 2204 / 2204
  3. 2404 / 2404
  4. 2304 / 2304

Correct answer / सही उत्तर: D — 2304

∵ The number is 48 → $48^2 = 48 \times 48$ → $48 = 50 - 2$ → $(50 - 2)^2 = 2500 - 200 + 4$ ∴ $48^2 = 2304$

∵ संख्या 48 है → $48^2 = 48 \times 48$ → $48 = 50 - 2$ → $(50 - 2)^2 = 2500 - 200 + 4$ ∴ $48^2 = 2304 ```

Question 74

What is the square of 85?

85 का वर्ग क्या है?

  1. 7325 / 7325
  2. 7125 / 7125
  3. 7215 / 7215
  4. 7225 / 7225

Correct answer / सही उत्तर: D — 7225

∵ The number is 85 → $85^2 = 85 \times 85$ → $85 = 80 + 5$ → $(80 + 5)^2 = 6400 + 800 + 25$ ∴ $85^2 = 7225$

∵ संख्या 85 है → $85^2 = 85 \times 85$ → $85 = 80 + 5$ → $(80 + 5)^2 = 6400 + 800 + 25$ ∴ $85^2 = 7225

Question 75

What is the square of 47?

47 का वर्ग क्या है?

  1. 2109 / 2109
  2. 2309 / 2309
  3. 2209 / 2209
  4. 2199 / 2199

Correct answer / सही उत्तर: C — 2209

∵ The number is 47 → $47^2 = 47 \times 47$ → $47 = 50 - 3$ → $(50 - 3)^2 = 2500 - 300 + 9$ ∴ $47^2 = 2209$

∵ संख्या 47 है → $47^2 = 47 \times 47$ → $47 = 50 - 3$ → $(50 - 3)^2 = 2500 - 300 + 9$ ∴ $47^2 = 2209