# Six in a Subset of S

Level pending

Let set $$S$$ = {$$1,2,3,4,5,6,7,8,9$$}. You randomly pick a subset of S from a box (not including the empty set). The probability that the subset will have the number $$6$$ in it can be expressed as $$\frac{a}{b}$$.

What is $$a + b$$?

×