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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Q381. Find the next number: 4, 9, 16, 25, 36, ?

  1. 49
  2. 51
  3. 48
  4. 50
Show answer and explanation

Correct answer: A. 49

The series is of consecutive squares.

Q382. What is the square of 38?

  1. 1482
  2. 1520
  3. 1406
  4. 1444
Show answer and explanation

Correct answer: D. 1444

38 x 38 = 1444.

Q383. A number 200 is increased by 10%. What is the new number?

  1. 230
  2. 210
  3. 180
  4. 220
Show answer and explanation

Correct answer: D. 220

200 x (100+10)/100 = 220.

Q384. 10 is what percent of 120?

  1. 16.67%
  2. 13.33%
  3. 8.33%
  4. 3.33%
Show answer and explanation

Correct answer: C. 8.33%

(10/120) x 100 = 8.33%.

Q385. What is 85 x 40?

  1. 3430
  2. 3300
  3. 3400
  4. 3500
Show answer and explanation

Correct answer: C. 3400

85 x 40 = 3400.

Q386. What is the area of a square of side 3 cm (in sq cm)?

  1. 12
  2. 6
  3. 9
  4. 18
Show answer and explanation

Correct answer: C. 9

Area = side^2 = 9.

Q387. An item bought for Rs. 200 is sold at 25% profit. What is the selling price in Rs.?

  1. 230
  2. 270
  3. 250
  4. 225
Show answer and explanation

Correct answer: C. 250

SP = 200 x 125/100 = 250.

Q388. What is the cube of 2?

  1. 12
  2. 6
  3. 10
  4. 8
Show answer and explanation

Correct answer: D. 8

2^3 = 8.

Q389. Find the roots of x^2 - 10x + 21 = 0.

  1. 7 and 4
  2. -7 and -3
  3. 7 and 3
  4. 8 and 3
Show answer and explanation

Correct answer: C. 7 and 3

The equation factors as (x-7)(x-3) = 0.

Q390. If CP is Rs. 400 and SP is Rs. 560, find the profit percentage.

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

Correct answer: D. 40%

Profit = 160; Profit% = (160/400) x 100 = 40%.

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