Answer:
6
{red}, {blue}, {white}, {red, blue}, {blue, white}, {red, white}
m=8
Step-by-step explanation:
m={}
m={red}, m={blue}, m={white},
m={red,blue}, m={red,white}, m={blue,white}.
m={red,blue,white}
There are 8 subsets of the letter m.
Another Solution:
2⁴ = 8
