Question
calculate the elements of set B if it has 254 subsets
Answers
Reiny
for a set of n elements, the number of subsets is 2§n
2^n = 254
solve for n ,
BUT, since the number of elements must be a whole number, I suspect a typo, or else the question is bogus.
2^8 = 256
2^7 = 128
2^n = 254
solve for n ,
BUT, since the number of elements must be a whole number, I suspect a typo, or else the question is bogus.
2^8 = 256
2^7 = 128
Steve
I guess if you discount B itself and Ø, then that leaves 254 "proper, non-null" subsets.