Question

Let A and B be finite sets. Then if A?B = ?, then A?B) =
a) A + B
b) A + B!
c) A + B
d) AL - B

Answer 1

A and B are finite set and A ⊂ B

A ⊂ B means A is a subset of B

If A is subset of B, then all elements of A are present in B

∴n (A ⋃ B) = n (B)

Hope it helps!

Brainliest please!