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Zigmanuir [339]
3 years ago
10

If n(B) = 16, n(A ∪ B) = 26, and n(A ∩ B) = 5, find n(A).

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
4 0
<h3>Answer:  15</h3>

Work Shown:

n(A \cup B) = n(A) + n(B) - n(A \cap B)\\\\26 = n(A) + 16 - 5\\\\26 = n(A) + 11\\\\n(A) + 11 = 26\\\\n(A) = 26-11\\\\n(A) = 15\\\\

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