Posted by **Enis** on Sunday, March 3, 2013 at 5:48pm.

let A={12, 13, 14,15,16,18 } what is the subset of a

A has how many subset

B has ------ subset

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**Enis**, Sunday, March 3, 2013 at 5:54pm
Math elements

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**Dr. Jane**, Sunday, March 3, 2013 at 7:07pm
I think you are missing part of your question for B.

A can be a subset of itself, so it would include everything

The null or empty set is also a subset.

Each number could be in its own subset.

We are up to 8 subsets.

Also, we could take two numbers at a time to make unique subsets you would use combinations to do that. 6!/(2!4!)

Then you could take three numbers at a time: 6!/(3!3!)

Then you could take four numbers at a time: 6!/(4! 2!)

Finally, you could take five numbers at a time: 6!(5!1!)

Sum all of these and you will get the total number of subsets for A.

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