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JEE MATHEMATICS MCQ: COMBINATIONS

1 Easy

1 of 1

Analyzing +4 | -1

If

{\;^n}{C_{r - 1}} = 36,\;{\;^n}{C_r} = 84

and

{\;^n}{C_{r + 1}} = 126

, then the value of

r

is

View answer and explanation

Correct option: C

3

Option C (3) is correct because solving the ratios of consecutive binomial coefficients leads to the correct value of r.

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n