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JEE MATHEMATICS MCQ: COMBINATIONS

1 Easy

1 of 1

Application +4 | -1

If

{ }^{2 {n}} C_4,{ }^{2 {n}} C_5

and

{ }^{2 {n}} C_6

are in A.P, then

n

is equal to

View answer and explanation

Correct option: C

7

Option C (7) is correct because solving the given equation involving combinations leads to a quadratic equation with n=7 as a valid solution.

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n