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A set is known to have 255 proper subsets. How many distinct elements does this set have?
10 years ago

Answers

Reiny
by proper subsets I assume we would exclude the empty set
So with the empty set there were 256 subsets

for n elements, the number of subsets is 2^n
2^n = 256
but 256 = 2^8
so n = 8

and there were 8 elements in the set
10 years ago
wami
255
4 years ago
Edlawit baye
Yes
3 years ago
ENTU
2^8
2 years ago

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