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  9. Q135

TGPSC Group-I 2023 · Question 135 of 136

If 25 # 5 = 5, 10 @ 2 = 20, 5 & 3 = 8 and 10 $ 6 = 4, then find the value of the following : 20 $ 6 @ 1 & (20 # 10)

Mental Ability

  1. A20
  2. B18
  3. C16Correct
  4. D22

Answer: C. 16

Explanation

# is ÷, @ is ×, & is +, $ is −: 20 − 6×1 + (20÷10) = 20 − 6 + 2 = 16.

Source: TGPSC Group-I Preliminary Test 2023 official question paper (held 11 Jun 2023)

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