2022
Mathematics
67ca00ce0c643c71d77dee1f
If n(P) = 20 and n(Q) = 30 and n(PuQ) = 40, find the value n(PnQ)
A.
10
B.
30
C.
15
D.
40
Correct Answer: 10
Explanation
n(PuQ) = n(p) + n(q) - n(PnQ) 40 = 20 + 30 - n(PnQ) n(PnQ) = 50 - 40 = 10
n(PuQ) = n(p) + n(q) - n(PnQ) 40 = 20 + 30 - n(PnQ) n(PnQ) = 50 - 40 = 10THIS WEEK's
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