Question

w.cusing the venn diager veriby n (AUB) =n(A) +n (B) -n(AintersectoinB)
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Answer 1

Step-by-step explanation:

To verify n(A ∪ B) = n(A) + n(B) – n(A ∩ B),

we need to prove that Venn diagram of both the sides of the equality overlap (i.e., are same).

Refer the attachments.

Clearly, when we see n(A) + n(B), ‘n(A ∩ B)’ comes two times. So, we subtract n(A ∩ B) to get n(A ∪ B).

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