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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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Q511. A father is 50 years old and his son is 13. What will be the sum of their ages after 4 years?

  1. 63
  2. 67
  3. 71
  4. 75
Show answer and explanation

Correct answer: C. 71

Sum now = 63; after 4 years add 2x4.

Q512. What is the sum of first 10 even natural numbers?

  1. 90
  2. 110
  3. 55
  4. 100
Show answer and explanation

Correct answer: B. 110

n(n+1) = 10x11 = 110.

Q513. Simplify: (8+1)^2 - (8-1)^2

  1. 16
  2. 32
  3. 34
  4. 64
Show answer and explanation

Correct answer: B. 32

Using (p+q)^2-(p-q)^2 = 4pq = 4a.

Q514. What is the average of 12, 32, 48, 43, 20?

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

Correct answer: C. 31

Sum = 155; average = 155/5 = 31.

Q515. What is the LCM of 16 and 8?

  1. 16
  2. 24
  3. 8
  4. 32
Show answer and explanation

Correct answer: A. 16

LCM = (x*y)/HCF = 128/8 = 16.

Q516. What is the average of 45, 39, 18, 28, 25?

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

Correct answer: D. 31

Sum = 155; average = 155/5 = 31.

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