# If B is included in C, then the power set of B is included in the power set of C?

1. ### yxgao

124
How do you show that if B is included in C, then the power set of B is included in the power set of C?

2. ### Hurkyl

16,090
Staff Emeritus
What have you tried already? I'd imagine just starting with the definitions would give a strong clue.