Algebra

JKSSB Sub-Inspector (Executive) · Mathematics · 47 practice questions with answers and explanations: 11 Easy, 19 Medium, 17 Hard.

Sample questions

Sample Easy question 1

If 3x - 7 = 11, find x.

  1. 5
  2. 6
  3. 7
  4. 8
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Answer: B. 3x = 18, so x = 6.

Sample Medium question 2

Which of the following is a factor of x² - 9?

  1. (x - 3)
  2. (x - 9)
  3. (x + 9)
  4. (x - 1)
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Answer: A. x² - 9 = (x - 3)(x + 3), so (x - 3) is a factor.

Sample Hard question 3

The length of a rectangle is 3 more than twice its width. If the perimeter is 36 cm, find the width.

  1. 4
  2. 5
  3. 6
  4. 7
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Answer: B. Let width = w, length = 2w+3. Perimeter: 2(w + 2w + 3) = 36, so 6w + 6 = 36, w = 5.

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