Let = ( 4 ! ) ! ( 4 ! ) 3 ! and = ( 5 ! ) ! ( 5 ! ) 4 ! . Then, Permutations and Combinations jee mains questions

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Solution

Q.
Let $α = \frac{(4!)!}{{(4!)}^{3!}}$ and $β = \frac{(5!)!}{{(5!)}^{4!}} .$ Then

1 $α \notin N$ and $β \in N$

2 $α \in N$ and $β \notin N$

3 $α \in N$ and $β \in N$

4 $α \notin N$ and $β \notin N$

Ans.
(3)

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