Respuesta :

Answer:

The answer is 18.

Step-by-step explanation:

The outcomes are as follows:

2-1 | 1-2 | 2-3 | 3-2 | 2-5 | 5-2

4-1 | 1-4 | 4-3 | 3-4 | 4-5 | 5-4

6-1 | 1-6 | 6-3 | 3-6 | 6-5 | 5-6

There are a total of 18 listed.