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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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Q221. What is 8.9 + 7.5?

  1. 16.5
  2. 16.4
  3. 16.3
  4. 17.4
Show answer and explanation

Correct answer: B. 16.4

8.9 + 7.5 = 16.4.

Q222. What is the area of a square of side 18 cm (in sq cm)?

  1. 342
  2. 324
  3. 648
  4. 72
Show answer and explanation

Correct answer: B. 324

Area = side^2 = 324.

Q223. How many sides does an octagon have?

  1. 8
  2. 7
  3. 9
  4. 6
Show answer and explanation

Correct answer: A. 8

An octagon has eight sides.

Q224. The average of 7 numbers is 56. If 6 of them are 65, 61, 62, 64, 47, 51, what is the remaining number?

  1. 47
  2. 43
  3. 42
  4. 41
Show answer and explanation

Correct answer: C. 42

Total = 56x7 = 392; remaining = 392-350 = 42.

Q225. What is 3.9 + 1.2?

  1. 5.2
  2. 5.1
  3. 6.1
  4. 5.0
Show answer and explanation

Correct answer: B. 5.1

3.9 + 1.2 = 5.1.

Q226. Divide Rs. 18 in the ratio 5:4. What is the larger share in Rs.?

  1. 11
  2. 8
  3. 10
  4. 12
Show answer and explanation

Correct answer: C. 10

Parts = 9; each part = 2; larger share = 10.

Q227. Divide Rs. 8 in the ratio 3:1. What is the larger share in Rs.?

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

Correct answer: B. 6

Parts = 4; each part = 2; larger share = 6.

Q228. A can finish a job in 6 days and B in 3 days. How many days will they take working together?

  1. 9
  2. 4
  3. 3
  4. 2
Show answer and explanation

Correct answer: D. 2

Combined rate = 1/6 + 1/3; time = 18/9.

Q229. Find the volume of a cuboid of 3 cm x 4 cm x 6 cm (in cubic cm).

  1. 75
  2. 108
  3. 68
  4. 72
Show answer and explanation

Correct answer: D. 72

Volume = lbh = 72.

Q230. The average of 5 numbers is 34. If 4 of them are 39, 42, 40, 27, what is the remaining number?

  1. 27
  2. 21
  3. 22
  4. 23
Show answer and explanation

Correct answer: C. 22

Total = 34x5 = 170; remaining = 170-148 = 22.

Mathematics MCQs by exam

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