Question

you!
* Let A = {a, b}. Then number of one-one functions
from A to A possible are
(a) 2
(6) 4
(c) 1
(d) 3​

Answer 1

Answer:

option (b)

Step-by-step explanation:

=A*A

={a,b}*{a,b}

={a,a},{a,b},{b,a},{b,b}