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If n(A)=4" and "n(B)=6. Then, the number...

If `n(A)=4" and "n(B)=6`. Then, the number of one-one function from A to B is

A

24

B

60

C

120

D

360

Text Solution

Verified by Experts

The correct Answer is:
D
Given, `n(A)=4 and n(B)=6` Here, `n(B)gtn(A)`
Hence, the function f is one-one
`therefore` Required number of ways `=""^(6)P_(4)`
`=(6!)/(2!)=360`
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