A Venn diagram contains two sets. n(ξ) = 20, n(A) = 7, n(A ∪ B) = 12, n(B′) = 12.
Find n(A ∩ B).
Answers
Answered by
1
Answer:
5
Step-by-step explanation:
well subtract b compliment from A set
12-7=5
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