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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

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Analyzing +4 | -1

The value of

\sum\limits_{{r=0}}^{n-1}{ }^n C_r /\left({ }^n C_r+{ }^n C_{r+1}\right)

equals

View answer and explanation

Correct option: B

n / 2

Option B (

n / 2

) is correct because the summation simplifies to

n/2

after applying properties of binomial coefficients.

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