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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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Q51. Find the perimeter of a rectangle with length 6 cm and breadth 3 cm (in cm).

  1. 9
  2. 18
  3. 15
  4. 36
Show answer and explanation

Correct answer: B. 18

Perimeter = 2(l+b) = 18.

Q52. What is 0.25 as a fraction?

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

Correct answer: C. 1/4

0.25 = 25/100 = 1/4.

Q53. Find the volume of a cube of side 5 cm (in cubic cm).

  1. 130
  2. 25
  3. 125
  4. 150
Show answer and explanation

Correct answer: C. 125

Volume = side^3 = 125.

Q54. What is the square root of 1156?

  1. 36
  2. 34
  3. 33
  4. 35
Show answer and explanation

Correct answer: B. 34

34 x 34 = 1156, so the root is 34.

Q55. What is the LCM of 9 and 6?

  1. 21
  2. 18
  3. 15
  4. 36
Show answer and explanation

Correct answer: B. 18

LCM = (x*y)/HCF = 54/3 = 18.

Q56. Find the area of a triangle with base 18 cm and height 11 cm (in sq cm).

  1. 29
  2. 198
  3. 99
  4. 110
Show answer and explanation

Correct answer: C. 99

Area = 1/2 x base x height = 99.

Q57. A shopkeeper buys a watch for Rs. 2000 and sells it at a 10% loss. Find the selling price in Rs.

  1. 1990
  2. 1800
  3. 1770
  4. 1830
Show answer and explanation

Correct answer: B. 1800

SP = 2000 x 90/100 = 1800.

Q58. If 4 kg of sugar costs Rs. 60, find the cost of 10 kg (in Rs.).

  1. 150
  2. 135
  3. 165
  4. 160
Show answer and explanation

Correct answer: A. 150

Cost of 1 kg = 15; for 10 kg = 150.

Q59. A number 100 is increased by 10%. What is the new number?

  1. 120
  2. 90
  3. 100
  4. 110
Show answer and explanation

Correct answer: D. 110

100 x (100+10)/100 = 110.

Q60. What is the cube of 15?

  1. 3390
  2. 3600
  3. 3375
  4. 3360
Show answer and explanation

Correct answer: C. 3375

15^3 = 3375.

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