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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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Q361. 5 is what percent of 40?

  1. 25%
  2. 7.5%
  3. 12.5%
  4. 17.5%
Show answer and explanation

Correct answer: C. 12.5%

(5/40) x 100 = 12.5%.

Q362. What is 15% of 300?

  1. 40
  2. 90
  3. 45
  4. 55
Show answer and explanation

Correct answer: C. 45

15% of 300 = 15/100 x 300 = 45.

Q363. What is the square of 39?

  1. 1482
  2. 1521
  3. 1599
  4. 1560
Show answer and explanation

Correct answer: B. 1521

39 x 39 = 1521.

Q364. The marked price of an article is Rs. 1000. After a discount of 15%, what is the selling price in Rs.?

  1. 800
  2. 985
  3. 900
  4. 850
Show answer and explanation

Correct answer: D. 850

SP = 1000 x 85/100 = 850.

Q365. Find the volume of a cube of side 10 cm (in cubic cm).

  1. 600
  2. 1000
  3. 100
  4. 1010
Show answer and explanation

Correct answer: B. 1000

Volume = side^3 = 1000.

Q366. If x + y = 5 and x - y = 3, find x.

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

Correct answer: B. 4

Adding the equations: 2x = 8; x = 4.

Q367. Which of these numbers is divisible by 9?

  1. 731
  2. 728
  3. 729
  4. 730
Show answer and explanation

Correct answer: C. 729

The digit sum of 729 is 18, divisible by 9.

Q368. What is the HCF of 9 and 6?

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

Correct answer: B. 3

The greatest common divisor of 9 and 6 is 3.

Q369. If 2x + 7 = 31, find x.

  1. 11
  2. 13
  3. 14
  4. 12
Show answer and explanation

Correct answer: D. 12

2x = 24, so x = 12.

Q370. What is 42 x 14?

  1. 628
  2. 548
  3. 588
  4. 538
Show answer and explanation

Correct answer: C. 588

42 x 14 = 588.

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