Let n(A)=3 and n(B)=5, then the number o...

Let `n(A)=3 and n(B)=5`, then the number of one - one functions from A to B is

A

15

B

60

C

125

D

10

Text Solution

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The correct Answer is:

B

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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

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D

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If A and B are two sets with n(A)=4 and n(B)=2 then the number of onto functions from A to B is

A

14

B

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C

12

D

.15

Let n(A) = 4 and n(B) = 6, then number of one-one functions from A to Bis

A

120

B

360

C

24

D

none of these

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