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JKSSB Sub-Inspector (Telecommunication) · General Intelligence & Reasoning · 44 practice questions with answers and explanations: 18 Easy, 14 Medium, 12 Hard.

Sample questions

Sample Easy question 1

Find the next number: 100, 50, 25, 12.5, ?

  1. 5
  2. 6
  3. 6.25
  4. 7.5
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Answer: C. Each term is half the previous one: 12.5 ÷ 2 = 6.25.

Sample Medium question 2

Find the next number: 1, 4, 9, 18, 35, ?

  1. 60
  2. 64
  3. 68
  4. 70
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Answer: C. The differences between terms are 3, 5, 9, 17 — each difference is (previous difference × 2) − 1. The next difference is 17×2−1 = 33, so the next term is 35 + 33 = 68.

Sample Hard question 3

Find the value that completes the pair: (2, 5), (3, 10), (4, 17), (5, ?)

  1. 24
  2. 26
  3. 28
  4. 30
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Answer: B. Each pair follows (n, n² + 1): 5² + 1 = 26.

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