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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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Q491. What is the sum of interior angles of a polygon with 9 sides?

  1. 1260 degrees
  2. 1620 degrees
  3. 1440 degrees
  4. 1350 degrees
Show answer and explanation

Correct answer: A. 1260 degrees

Sum = (n-2) x 180 = 1260.

Q492. If 10% of a number is 150, what is the number?

  1. 1520
  2. 3000
  3. 1500
  4. 1480
Show answer and explanation

Correct answer: C. 1500

Number = 150 x 100/10 = 1500.

Q493. Find the next number: 4, 16, 64, 256, 1024, ?

  1. 4096
  2. 5120
  3. 4092
  4. 4100
Show answer and explanation

Correct answer: A. 4096

Each term is multiplied by 4; next = 4096.

Q494. If 8x + 13 = 125, find x.

  1. 13
  2. 16
  3. 14
  4. 15
Show answer and explanation

Correct answer: C. 14

8x = 112, so x = 14.

Q495. Find the volume of a cube of side 6 cm (in cubic cm).

  1. 864
  2. 216
  3. 222
  4. 36
Show answer and explanation

Correct answer: B. 216

Volume = side^3 = 216.

Q496. What is 15% of 200?

  1. 60
  2. 40
  3. 25
  4. 30
Show answer and explanation

Correct answer: D. 30

15% of 200 = 15/100 x 200 = 30.

Q497. Find the area of a rectangle with length 25 cm and breadth 13 cm (in sq cm).

  1. 76
  2. 325
  3. 350
  4. 312
Show answer and explanation

Correct answer: B. 325

Area = l x b = 325.

Q498. A can finish a job in 9 days and B in 18 days. How many days will they take working together?

  1. 27
  2. 7
  3. 6
  4. 8
Show answer and explanation

Correct answer: C. 6

Combined rate = 1/9 + 1/18; time = 162/27.

Q499. The average of 8 numbers is 31. If 7 of them are 22, 23, 24, 38, 25, 32, 26, what is the remaining number?

  1. 59
  2. 57
  3. 58
  4. 63
Show answer and explanation

Correct answer: C. 58

Total = 31x8 = 248; remaining = 248-190 = 58.

Q500. Find the next number: 11, 18, 25, 32, 39, ?

  1. 46
  2. 53
  3. 45
  4. 47
Show answer and explanation

Correct answer: A. 46

The series increases by 7; next = 46.

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