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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Medium

1 of 1

Application +4 | -1

{\;^n}{P_r} = 3024

and

{\;^n}{C_r} = 126

, then

r

is

View answer and explanation

Correct option: B

4

Option B (4) is correct because by dividing the permutation formula by the combination formula, we can solve for r.

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