If n C 4 , n C 5 , and n C 6 are in A.P., the value of n ca…

Maths Permutations & Combination Definition of Combinations, Condition Combinations, Division into Groups, Derangements Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

If n C 4 , n C 5 , and n C 6 are in A.P., the value of n can be-

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The correct answer is:

CHECK THE SOLUTION.

(a, c)

2 n C 5 = n C 4 + n C 6

on solving n 2 – 21n + 98 = 0 ⇒ n = 7, 14

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