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UPSC PYQPrelims 2025

Civil Services Examination · Question 78

The average of three numbers p, q and r is k. p is as much more than the average as q is less than the average. What is the value of r?

  1. k
  2. k - 1
  3. k + 1
  4. k/2
Show answer & explanation

Answer: (A) k

Explanation

p + q = 2k, and p + q + r = 3k, so r = k. (Answer as per the official UPSC answer key.)