Question

let A={1,2,3} and B={5,6,7,8,9} , then number of one-one function defined as f:A->B are _____​

Answer 1

Answer:

The no of one -one function= 60

Step-by-step explanation:

A={1, 2,3} and B= {5, 6,7,8,9}

Now the number of one - one function

f:A->B is =5×4×3=60