Geometry

JKSSB Sub-Inspector (Telecommunication) · Basic Numeracy · 100 practice questions with answers and explanations: 32 Easy, 36 Medium, 32 Hard.

Sample questions

Sample Easy question 1

What is the number of diagonals in a quadrilateral?

  1. 1
  2. 2
  3. 3
  4. 4
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Answer: B. A quadrilateral has 2 diagonals.

Sample Medium question 2

The diagonals of a rhombus are 10 cm and 24 cm. Find the length of a side.

  1. 11 cm
  2. 12 cm
  3. 13 cm
  4. 14 cm
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Answer: C. Half-diagonals are 5 and 12; side = √(5² + 12²) = √169 = 13 cm.

Sample Hard question 3

The area of an equilateral triangle with side 8 cm is (use √3 ≈ 1.73):

  1. 25.6 cm²
  2. 27.7 cm²
  3. 29.8 cm²
  4. 31.9 cm²
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Answer: B. Area = (√3/4) × side² = (1.73/4) × 64 ≈ 27.7 cm².

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