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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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Q311. A bus covers 120 km in 5 hours. What is its average speed in km/h?

  1. 34
  2. 19
  3. 24
  4. 29
Show answer and explanation

Correct answer: C. 24

Speed = 120/5 = 24 km/h.

Q312. Find the total surface area of a cube of side 10 cm (in sq cm).

  1. 600
  2. 60
  3. 1000
  4. 400
Show answer and explanation

Correct answer: A. 600

TSA = 6 x side^2 = 600.

Q313. In a right-angled triangle, the two legs are 3 cm and 4 cm. Find the hypotenuse (in cm).

  1. 4
  2. 5
  3. 7
  4. 6
Show answer and explanation

Correct answer: B. 5

Hypotenuse = sqrt(3^2+4^2) = 5.

Q314. What is the area of a circle of radius 28 cm? (use pi = 22/7)

  1. 2464
  2. 1232
  3. 2492
  4. 176
Show answer and explanation

Correct answer: A. 2464

Area = pi r^2 = 22/7 x 28^2 = 2464.

Q315. What is 64 x 30?

  1. 1890
  2. 1940
  3. 1900
  4. 1920
Show answer and explanation

Correct answer: D. 1920

64 x 30 = 1920.

Q316. If 2x + 12 = 36, find x.

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

Correct answer: D. 12

2x = 24, so x = 12.

Q317. What is the HCF of two co-prime numbers?

  1. Product of numbers
  2. 1
  3. Sum of numbers
  4. 0
Show answer and explanation

Correct answer: B. 1

Co-prime numbers have HCF 1.

Q318. Find the simple interest on Rs. 20000 at 10% per annum for 4 years (in Rs.).

  1. 8000
  2. 16000
  3. 8100
  4. 7900
Show answer and explanation

Correct answer: A. 8000

SI = PRT/100 = 20000 x 10 x 4/100 = 8000.

Q319. 2 is what percent of 40?

  1. 5%
  2. 15%
  3. 0%
  4. 10%
Show answer and explanation

Correct answer: A. 5%

(2/40) x 100 = 5%.

Q320. What is the supplement of 135 degrees?

  1. 35 degrees
  2. 45 degrees
  3. 55 degrees
  4. 225 degrees
Show answer and explanation

Correct answer: B. 45 degrees

Supplementary angles add to 180: 180-135 = 45.

Mathematics MCQs by exam

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