Test Preparation

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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Q281. If 25% of a number is 30, what is the number?

  1. 140
  2. 240
  3. 100
  4. 120
Show answer and explanation

Correct answer: D. 120

Number = 30 x 100/25 = 120.

Q282. What is the cube of 11?

  1. 1320
  2. 1342
  3. 1452
  4. 1331
Show answer and explanation

Correct answer: D. 1331

11^3 = 1331.

Q283. If x + y = 10 and x - y = -8, find x.

  1. 9
  2. 1
  3. 2
  4. 0
Show answer and explanation

Correct answer: B. 1

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

Q284. Divide Rs. 99 in the ratio 8:3. What is the larger share in Rs.?

  1. 27
  2. 63
  3. 72
  4. 81
Show answer and explanation

Correct answer: C. 72

Parts = 11; each part = 9; larger share = 72.

Q285. What is 2/5 as a percentage?

  1. 40%
  2. 20%
  3. 25%
  4. 45%
Show answer and explanation

Correct answer: A. 40%

2/5 = 0.4 = 40%.

Q286. What is the square root of 900?

  1. 29
  2. 30
  3. 32
  4. 31
Show answer and explanation

Correct answer: B. 30

30 x 30 = 900, so the root is 30.

Q287. Find the volume of a cube of side 3 cm (in cubic cm).

  1. 30
  2. 54
  3. 27
  4. 9
Show answer and explanation

Correct answer: C. 27

Volume = side^3 = 27.

Q288. The value of 2^10 is:

  1. 512
  2. 1024
  3. 1204
  4. 1000
Show answer and explanation

Correct answer: B. 1024

2^10 = 1024.

Q289. If CP is Rs. 1000 and SP is Rs. 1400, find the profit percentage.

  1. 50%
  2. 35%
  3. 45%
  4. 40%
Show answer and explanation

Correct answer: D. 40%

Profit = 400; Profit% = (400/1000) x 100 = 40%.

Q290. Find the compound interest on Rs. 2000 at 10% per annum for 2 years, compounded annually (in Rs.).

  1. 470
  2. 420
  3. 400
  4. 370
Show answer and explanation

Correct answer: B. 420

A = P(1+R/100)^2; CI = 420.

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