aaronmathew2716 aaronmathew2716

21-01-2019
Mathematics

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If x and y are 2 sets such that n(x) is 17, n(y) is 23, n(xUy) is 38, find x intersection y

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Аноним Аноним

21-01-2019

Answer:

n (x intersect y) = 2.

Step-by-step explanation:

I think you mean n ( x intersect y).

n(x) + n(y) = 17 + 23 = 40.

But n(x U y) = 38 so 40 - 38 = 2 elements are common to set x and set y.

Therefore n (x ∩ y) = 2.

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