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LSSSSB Non-Technical · Reasoning · 44 practice questions with answers and explanations: 22 Easy, 21 Medium, 1 Hard.

Sample questions

Sample Easy question 1

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

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

Sample Easy question 2

Find the missing number: 3, 3, 6, 6, 9, ?, 12

  1. 9
  2. 6
  3. 10
  4. 12
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Answer: A. Each number appears twice before moving to the next multiple of 3: 9, 9, 12 — so the missing term is 9.

Sample Easy question 3

In the pairs (2, 4), (3, 9), (4, 16), (5, ?), what number completes the last pair?

  1. 20
  2. 30
  3. 24
  4. 25
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Answer: D. Each pair follows (n, n²); for n = 5, the second value is 5² = 25.

Sample Medium question 4

Find the next letter-number term: C3, F9, I27, L81, ?

  1. P243
  2. N243
  3. O162
  4. O243
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Answer: D. Letters skip two each time (C,F,I,L,O) and the number is multiplied by 3 each time (3,9,27,81,243), giving O243.

Sample Medium question 5

Find the missing number: 6, 11, 21, 41, ?, 161

  1. 76
  2. 81
  3. 84
  4. 79
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Answer: B. Each term follows (previous × 2) - 1: 41 × 2 - 1 = 81 (check: 81 × 2 - 1 = 161).

Sample Medium question 6

Find the next number: 7, 13, 25, 49, ?

  1. 99
  2. 95
  3. 93
  4. 97
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Answer: D. Each term follows ×2 - 1: 49×2-1 = 97.

Sample Hard question 7

Find the next number: 2, 5, 14, 41, ?

  1. 124
  2. 122
  3. 128
  4. 120
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Answer: B. Each term follows (previous × 3) - 1: 41 × 3 - 1 = 122.

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