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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Application +4 | -1

Rakshit is allowed to select 1 or more books out of

(2 n+1)

distinct books. If the number of ways in which he may not select all of them is 126, then value of

{n}

is ___.

View answer and explanation

Correct option: A

3

Option A (3) is correct because the value of n is found by solving the equation derived from the given condition about selecting books.

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