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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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Q341. What is the square root of 1024?

  1. 32
  2. 34
  3. 31
  4. 33
Show answer and explanation

Correct answer: A. 32

32 x 32 = 1024, so the root is 32.

Q342. What is the area of a circle of radius 14 cm? (use pi = 22/7)

  1. 630
  2. 88
  3. 616
  4. 308
Show answer and explanation

Correct answer: C. 616

Area = pi r^2 = 22/7 x 14^2 = 616.

Q343. Find the volume of a cube of side 7 cm (in cubic cm).

  1. 343
  2. 350
  3. 294
  4. 49
Show answer and explanation

Correct answer: A. 343

Volume = side^3 = 343.

Q344. What is the LCM of 20 and 8?

  1. 36
  2. 44
  3. 40
  4. 80
Show answer and explanation

Correct answer: C. 40

LCM = (x*y)/HCF = 160/4 = 40.

Q345. An item bought for Rs. 500 is sold at 40% profit. What is the selling price in Rs.?

  1. 540
  2. 700
  3. 720
  4. 680
Show answer and explanation

Correct answer: B. 700

SP = 500 x 140/100 = 700.

Q346. What is the sum of interior angles of a polygon with 8 sides?

  1. 1440 degrees
  2. 1170 degrees
  3. 1080 degrees
  4. 1260 degrees
Show answer and explanation

Correct answer: C. 1080 degrees

Sum = (n-2) x 180 = 1080.

Q347. Find the simple interest on Rs. 1000 at 5% per annum for 3 years (in Rs.).

  1. 250
  2. 50
  3. 300
  4. 150
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Correct answer: D. 150

SI = PRT/100 = 1000 x 5 x 3/100 = 150.

Q348. Find the simple interest on Rs. 2000 at 8% per annum for 5 years (in Rs.).

  1. 700
  2. 900
  3. 1600
  4. 800
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Correct answer: D. 800

SI = PRT/100 = 2000 x 8 x 5/100 = 800.

Q349. What is the HCF of 72 and 36?

  1. 72
  2. 38
  3. 37
  4. 36
Show answer and explanation

Correct answer: D. 36

The greatest common divisor of 72 and 36 is 36.

Q350. What is the sum of interior angles of a polygon with 10 sides?

  1. 1440 degrees
  2. 1620 degrees
  3. 1530 degrees
  4. 1800 degrees
Show answer and explanation

Correct answer: A. 1440 degrees

Sum = (n-2) x 180 = 1440.

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