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SSC MTS 2024 · PYQ · Number Series / Analogy · medium

13 is related to 103 following a certain logic. Following the same logic, 9 is related to 71. To which of the following is 15 related, following the same logic? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.)

  1. A.109
  2. B.117
  3. C.119✓ Correct
  4. D.112

Explanation

The pattern is: multiply the number by 8 and subtract 1. 13×8−1=103 and 9×8−1=71. Similarly, 15×8−1=120−1=119.
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