How many one-to-one functions are there from a set with two elements to a set with three elements?

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