SOLUTION: What are the subsets of {2,4,6,8,10,12,14,16,18}?

Question 1120896: What are the subsets of {2,4,6,8,10,12,14,16,18}?
Found 2 solutions by greenestamps, Alan3354:
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

The set has 9 elements; the number of subsets is 2^9 = 512.

I see no use in the exercise of listing them all....

Note there will be....
9C0 = 1 subset with 0 elements
9C1 = 9 subsets with 1 elements
9C2 = 36 subsets with 2 elements
9C3 = 84 subsets with 3 elements
9C4 = 126 subsets with 4 elements
9C5 = 126 subsets with 5 elements
9C6 = 84 subsets with 6 elements
9C7 = 36 subsets with 7 elements
9C8 = 9 subsets with 8 elements
9C9 = 1 subset with 9 elements

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
What are the subsets of {2,4,6,8,10,12,14,16,18}?
-----------
The sets that contain at least one of the elements in the given set, plus the null set {}
--> 512 subsets
To list them, use the position and use binary numbers.
0 = element not in the subset
1 = element in the subset
=============
{000000000)
{000000001}
{000000010}
.
.
.
{111111111}

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