How many combinations can you make with at least one of all the choices

I think it is 27

Step-by-step explanation:

I hope it's correct!

27

Step-by-step explanation:

v-h-s, v-h-n, v-h-c, v-c-s, v-c-n, v-c-c, v-b-s, v-b-n, v-b-c.

c-h-s, c-h-n, c-h-c, c-c-s, c-c-n and so on this got annoying XD hope this helps

20

step-by-step explanation: