Answers

2016-01-27T19:43:50+08:00
We have 2^n where n is the cardinality.. Therefore,
2^3 = 8
The answer to your question is 8. If the null set isn't allowed, then the answer is 7. ☺ I hope it help.

We have
{C} {A} {T}
{C, A} {C,T} {A, T}
{C, A, T} { }
0