Question

This math is new to me and I could usually use some help. Thanks

Answer 1

`\lvert P\cap Q\rvert=\lbrace x,r,e\rbrace`

Explanation:

Intersection "∩" means when the two groups intersect, in other words, the intersection is the common values between the groups.

Therefore,

`\lvert P\cap Q\rvert=\lbrace x,r,e\rbrace`