If you change the three toys into A, B and C, there are several ways to give them to two people, that is, the combination problem used in mathematics.

1. Give A and B and C to B.

2. Give A and C to A and B to B..

Give b and c to a, and a to B.

The above is divided into two toys, so when B is divided into two toys, is there three points? This applies to the arrangement problem in mathematics, so the following points are drawn.

4. Give A and B to B and C to A..

5. give a and c to b, and b to a.

6. Give B and C to B and A to A..