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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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Q441. In a right-angled triangle, the two legs are 8 cm and 15 cm. Find the hypotenuse (in cm).

  1. 23
  2. 17
  3. 16
  4. 18
Show answer and explanation

Correct answer: B. 17

Hypotenuse = sqrt(8^2+15^2) = 17.

Q442. What is the probability of getting a head when a fair coin is tossed?

  1. 1/4
  2. 1/2
  3. 0
  4. 1
Show answer and explanation

Correct answer: B. 1/2

Two equally likely outcomes.

Q443. What is the sum of first 10 natural numbers?

  1. 55
  2. 50
  3. 45
  4. 60
Show answer and explanation

Correct answer: A. 55

n(n+1)/2 = 10x11/2 = 55.

Q444. What is 5% of 800?

  1. 50
  2. 80
  3. 35
  4. 40
Show answer and explanation

Correct answer: D. 40

5% of 800 = 5/100 x 800 = 40.

Q445. What is 81 x 40?

  1. 3210
  2. 3340
  3. 3280
  4. 3240
Show answer and explanation

Correct answer: D. 3240

81 x 40 = 3240.

Q446. If x + y = 8 and x - y = -6, find x.

  1. 7
  2. 0
  3. 2
  4. 1
Show answer and explanation

Correct answer: D. 1

Adding the equations: 2x = 2; x = 1.

Q447. Find the next number: 25, 36, 49, 64, 81, ?

  1. 101
  2. 100
  3. 99
  4. 102
Show answer and explanation

Correct answer: B. 100

The series is of consecutive squares.

Q448. What is the LCM of 64 and 24?

  1. 192
  2. 184
  3. 384
  4. 200
Show answer and explanation

Correct answer: A. 192

LCM = (x*y)/HCF = 1536/8 = 192.

Q449. In a right-angled triangle, the two legs are 6 cm and 8 cm. Find the hypotenuse (in cm).

  1. 14
  2. 11
  3. 10
  4. 9
Show answer and explanation

Correct answer: C. 10

Hypotenuse = sqrt(6^2+8^2) = 10.

Q450. 50 is what percent of 50?

  1. 105%
  2. 100%
  3. 95%
  4. 200%
Show answer and explanation

Correct answer: B. 100%

(50/50) x 100 = 100%.

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