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  4. For a positive integer n, if the mean of the binomial coefficients in the expansion of (a + b)2n - 3 is 16, then n is equal to :

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Q. For a positive integer $n$, if the mean of the binomial coefficients in the expansion of $(a + b)^{2n - 3}$ is 16, then $n$ is equal to :

JEE MainJEE Main 2018Binomial Theorem

Solution:

Correct answer is (a) 5