I have no freaking Idea on how to do this

4) R {1,2,3,4,7} T{3,5,6,7} What is the intersection of R & T?

5) What are the subsets of {-2,-1}?

1 answer

The intersection is the set of elements common to both sets. In this case,

R∩T = {3,7}

The subsets of {-2,1} are

Ø, {-2}, {1}, {-2,1}

There are 2n subsets of a n-element set.

If you really have no freaking idea on this, I suggest you read your text and talk to your teacher. Really.
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