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NTS / PTS Mathematics MCQs with Answers

87 practice MCQs on Mathematics for NTS / PTS tests. Think of your answer first, then open "Show answer and explanation". These are practice questions, not official examination papers.

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Q81. Simplify: (7+1)^2 - (7-1)^2

  1. 14
  2. 49
  3. 30
  4. 28
Show answer and explanation

Correct answer: D. 28

Using (p+q)^2-(p-q)^2 = 4pq = 4a.

Q82. Find the total surface area of a cube of side 7 cm (in sq cm).

  1. 343
  2. 196
  3. 294
  4. 42
Show answer and explanation

Correct answer: C. 294

TSA = 6 x side^2 = 294.

Q83. What is the HCF of 28 and 49?

  1. 14
  2. 8
  3. 9
  4. 7
Show answer and explanation

Correct answer: D. 7

The greatest common divisor of 28 and 49 is 7.

Q84. 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.

Q85. What is 26 x 66?

  1. 1706
  2. 1716
  3. 1726
  4. 1736
Show answer and explanation

Correct answer: B. 1716

26 x 66 = 1716.

Q86. What is the HCF of 10 and 35?

  1. 6
  2. 10
  3. 5
  4. 7
Show answer and explanation

Correct answer: C. 5

The greatest common divisor of 10 and 35 is 5.

Q87. A father is 50 years old and his son is 13. What will be the sum of their ages after 4 years?

  1. 63
  2. 67
  3. 71
  4. 75
Show answer and explanation

Correct answer: C. 71

Sum now = 63; after 4 years add 2x4.

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