Question

Subsets of 4

Answer 1

Are you looking at how many subsets of 4 things can be made?

Answer 2

It says classify each number by naming all the subsets in which it is an element... I don't get it

Answer 3

Ok. So let's try some examples and see if we can find a pattern

We have 4 numbers, 1,2,3,4

The way we can group them where 4 is a member is
1,2,3,4
2,3,4
3,4
4
Are there any other way to make subsets of 4 that also contain 4?

Answer 4

Well?

Answer 5

Are you thinking about it?

Answer 6

There are two choices for each element (included or not) so in total we have 2^4 = 16 possibilities

Answer 7

Oh okay I get it sort of... Thanks guys !