Answer:
6
Step-by-step explanation:
We have given that in first set thee are two element and in second set there are three element
So there are 3 options for sending the first element
(3-1) option of sending the second element
We have to send only two elements
So total number of ways =3×2=6
So there are 6 on-to-on functions from a set with two element to set of three element