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Clerical & Administrative Mathematics MCQs with Answers

86 practice MCQs on Mathematics for Clerical & Administrative tests. Think of your answer first, then open "Show answer and explanation". These are practice questions, not official examination papers.

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Q71. What is the HCF of 20 and 8?

  1. 5
  2. 6
  3. 8
  4. 4
Show answer and explanation

Correct answer: D. 4

The greatest common divisor of 20 and 8 is 4.

Q72. If 3x + 18 = 36, find x.

  1. 7
  2. 8
  3. 5
  4. 6
Show answer and explanation

Correct answer: D. 6

3x = 18, so x = 6.

Q73. 20 is what percent of 20?

  1. 95%
  2. 105%
  3. 100%
  4. 200%
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Correct answer: C. 100%

(20/20) x 100 = 100%.

Q74. A car travels at 40 km/h for 3 hours. How far does it travel (in km)?

  1. 120
  2. 140
  3. 110
  4. 160
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Correct answer: A. 120

Distance = speed x time = 120 km.

Q75. 2 is what percent of 400?

  1. -4.5%
  2. 0.5%
  3. 5.5%
  4. 1%
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Correct answer: B. 0.5%

(2/400) x 100 = 0.5%.

Q76. 5 is what percent of 50?

  1. 5%
  2. 20%
  3. 10%
  4. 15%
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Correct answer: C. 10%

(5/50) x 100 = 10%.

Q77. If CP is Rs. 400 and SP is Rs. 420, find the profit percentage.

  1. 15%
  2. 5%
  3. 1%
  4. 10%
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Correct answer: B. 5%

Profit = 20; Profit% = (20/400) x 100 = 5%.

Q78. If 4 kg of sugar costs Rs. 120, find the cost of 10 kg (in Rs.).

  1. 310
  2. 270
  3. 300
  4. 330
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Correct answer: C. 300

Cost of 1 kg = 30; for 10 kg = 300.

Q79. What is the sum of interior angles of a polygon with 9 sides?

  1. 1260 degrees
  2. 1620 degrees
  3. 1440 degrees
  4. 1350 degrees
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Correct answer: A. 1260 degrees

Sum = (n-2) x 180 = 1260.

Q80. Find the next number: 4, 16, 64, 256, 1024, ?

  1. 4096
  2. 5120
  3. 4092
  4. 4100
Show answer and explanation

Correct answer: A. 4096

Each term is multiplied by 4; next = 4096.

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