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Mathematics MCQs with Answers

Mathematics and quantitative reasoning questions appear in many job and entry tests. Practice arithmetic, algebra, percentages, ratios, averages, profit and loss, and geometry. Attempt timed MCQ tests to improve both your speed and accuracy.

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Q21. If 3x + 4 = 46, find x.

  1. 16
  2. 15
  3. 14
  4. 13
Show answer and explanation

Correct answer: C. 14

3x = 42, so x = 14.

Q22. An item bought for Rs. 500 is sold at 5% profit. What is the selling price in Rs.?

  1. 505
  2. 545
  3. 575
  4. 525
Show answer and explanation

Correct answer: D. 525

SP = 500 x 105/100 = 525.

Q23. The average of 6 numbers is 46. If 5 of them are 41, 40, 41, 54, 44, what is the remaining number?

  1. 61
  2. 57
  3. 56
  4. 55
Show answer and explanation

Correct answer: C. 56

Total = 46x6 = 276; remaining = 276-220 = 56.

Q24. A can finish a job in 15 days and B in 10 days. How many days will they take working together?

  1. 8
  2. 25
  3. 6
  4. 7
Show answer and explanation

Correct answer: C. 6

Combined rate = 1/15 + 1/10; time = 150/25.

Q25. What is the square root of 961?

  1. 31
  2. 32
  3. 33
  4. 30
Show answer and explanation

Correct answer: A. 31

31 x 31 = 961, so the root is 31.

Q26. An angle greater than 90 and less than 180 degrees is called:

  1. Reflex
  2. Acute
  3. Obtuse
  4. Right
Show answer and explanation

Correct answer: C. Obtuse

An obtuse angle lies between 90 and 180.

Q27. What is the square root of 1521?

  1. 39
  2. 40
  3. 41
  4. 38
Show answer and explanation

Correct answer: A. 39

39 x 39 = 1521, so the root is 39.

Q28. Convert 36 km/h into m/s.

  1. 10
  2. 8
  3. 12
  4. 129.6
Show answer and explanation

Correct answer: A. 10

Multiply by 5/18: 36 x 5/18 = 10 m/s.

Q29. What is the square of 17?

  1. 272
  2. 323
  3. 306
  4. 289
Show answer and explanation

Correct answer: D. 289

17 x 17 = 289.

Q30. What is the cube root of 1000?

  1. 11
  2. 12
  3. 9
  4. 10
Show answer and explanation

Correct answer: D. 10

10^3 = 1000.

Mathematics MCQs by exam

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