Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If 
and 
, then the value of r is equal to:
Text Solution
Verified by ExpertsThe correct answer is:
C
⇒ (n − r) = 1….(1)
⇒ n − r + 1 = r
⇒ n + 1 = 2r...(2)
(1) ⇒ 2r − 1 − r = 1 ⇒ r = 2
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