Question

Suppose Set A contains 94 elements and Set B contains 56 elements. If Sets A and B have 4

elements in common, what is the total number of elements in either Set A or Set B.
Answer =
elements

Answer 1

146 elements

Explanation:

If Set A has 94 elements, Set B has 56 elements, and
`A\cap B` has 4 elements, then:

`A\cup B=A+B-A\cap B\\A\cup B=94+56-4=\boxed{146}`

⇒146 elements (ans)