Question

Anybody know the answer to this?

Answer 1

Answer: Choice B

{4,5,6,7}

====================================================

Step-by-step explanation:

Set A = {4,5,6,7,8,9} since these values are larger than 3 and smaller than 10. We only consider whole numbers in this range.

Set B = {1,2,3,4,5,6,7} represents positive whole numbers less than 8

To find the set
`A \cap B` we need to see which values are in both A and B at the same time. Those values are {4,5,6,7}

So
`A \cap B = \{4,5,6,7\}`

--------

side note: the notation
`A \cap B` means "A intersect B", so we're looking at where the two sets intersect or overlap (ie what they have in common).