Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If k is odd then k C r is maximum for r equal to
A
(k – 1)
B
(k + 1)
C
k – 1
D
k
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b)
Let k = 2n + 1, then 2n + 1 C r is maximum when
r = n. Also 2n+1 C n = 2n + 1 C n+1
Thus, k C r is maximum when
r = 
(k – 1) or r = 
(k + 1).
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