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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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Q11. A triangle with exactly two equal sides is called:

  1. Equilateral
  2. Right
  3. Isosceles
  4. Scalene
Show answer and explanation

Correct answer: C. Isosceles

Two equal sides.

Q12. What is 71 x 85?

  1. 6025
  2. 6005
  3. 6045
  4. 6035
Show answer and explanation

Correct answer: D. 6035

71 x 85 = 6035.

Q13. If 20% of a number is 30, what is the number?

  1. 170
  2. 150
  3. 130
  4. 300
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Correct answer: B. 150

Number = 30 x 100/20 = 150.

Q14. Which is the smallest prime number?

  1. 0
  2. 2
  3. 1
  4. 3
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Correct answer: B. 2

2 is the smallest and only even prime.

Q15. What is the cube of 5?

  1. 125
  2. 130
  3. 120
  4. 150
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Correct answer: A. 125

5^3 = 125.

Q16. Find the area of a rectangle with length 16 cm and breadth 10 cm (in sq cm).

  1. 160
  2. 176
  3. 150
  4. 52
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Correct answer: A. 160

Area = l x b = 160.

Q17. What is the area of a square of side 6 cm (in sq cm)?

  1. 36
  2. 72
  3. 24
  4. 42
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Correct answer: A. 36

Area = side^2 = 36.

Q18. If 5x + 7 = 17, find x.

  1. 3
  2. 4
  3. 2
  4. 1
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Correct answer: C. 2

5x = 10, so x = 2.

Q19. How many sides does a hexagon have?

  1. 8
  2. 5
  3. 6
  4. 7
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Correct answer: C. 6

A hexagon has six sides.

Q20. Find the next number: 49, 64, 81, 100, 121, ?

  1. 146
  2. 143
  3. 144
  4. 145
Show answer and explanation

Correct answer: C. 144

The series is of consecutive squares.

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