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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Q141. What is the sum of interior angles of a polygon with 7 sides?

  1. 900 degrees
  2. 1260 degrees
  3. 990 degrees
  4. 1080 degrees
Show answer and explanation

Correct answer: A. 900 degrees

Sum = (n-2) x 180 = 900.

Q142. Find the volume of a cuboid of 6 cm x 8 cm x 3 cm (in cubic cm).

  1. 150
  2. 136
  3. 180
  4. 144
Show answer and explanation

Correct answer: D. 144

Volume = lbh = 144.

Q143. Find the next number: 3, 9, 27, 81, 243, ?

  1. 732
  2. 972
  3. 729
  4. 726
Show answer and explanation

Correct answer: C. 729

Each term is multiplied by 3; next = 729.

Q144. A car travels at 72 km/h for 3 hours. How far does it travel (in km)?

  1. 288
  2. 216
  3. 236
  4. 206
Show answer and explanation

Correct answer: B. 216

Distance = speed x time = 216 km.

Q145. Find the simple interest on Rs. 10000 at 8% per annum for 3 years (in Rs.).

  1. 2400
  2. 2300
  3. 2500
  4. 4800
Show answer and explanation

Correct answer: A. 2400

SI = PRT/100 = 10000 x 8 x 3/100 = 2400.

Q146. A shopkeeper buys a watch for Rs. 800 and sells it at a 15% loss. Find the selling price in Rs.

  1. 785
  2. 650
  3. 710
  4. 680
Show answer and explanation

Correct answer: D. 680

SP = 800 x 85/100 = 680.

Q147. Find the area of a triangle with base 24 cm and height 19 cm (in sq cm).

  1. 228
  2. 43
  3. 456
  4. 247
Show answer and explanation

Correct answer: A. 228

Area = 1/2 x base x height = 228.

Q148. The average of 7 numbers is 16. If 6 of them are 24, 11, 15, 16, 18, 19, what is the remaining number?

  1. 9
  2. 8
  3. 10
  4. 14
Show answer and explanation

Correct answer: A. 9

Total = 16x7 = 112; remaining = 112-103 = 9.

Q149. What is the HCF of 28 and 20?

  1. 8
  2. 5
  3. 6
  4. 4
Show answer and explanation

Correct answer: D. 4

The greatest common divisor of 28 and 20 is 4.

Q150. If 5 pens cost Rs. 125, what is the cost of 1 pen (in Rs.)?

  1. 25
  2. 50
  3. 30
  4. 20
Show answer and explanation

Correct answer: A. 25

125/5 = 25.

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