Question

n(A)=3,n(B)=4, then number of one-one functions from A to B is
a)16
b)20
c)24
d)28​

Answer 1

Answer:

non of these

Step-by-step explanation:

as

n(B)>n(A)

4>3

Since no. of one - one factorial possible

n(B)/n(A)

=4n/3n

=24/6

=4