Sets Question GSCE | Revision Server | Page 1

echo compass Dec 12, 2022, 8:14 PM

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Just another quick help on a q. (Doing revision)
How i do this?

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waxen iris Dec 12, 2022, 9:02 PM

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The intersection of P and Q is b which is also 3

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n(P)=a+b=9=a+3

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So a is 6

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n(Q)=b+c=3+c=5

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So c is 2

echo compass Dec 12, 2022, 9:05 PM

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Thanks mate. Pretty simple question i see now just got a bit confused. I keep on thinking n(x) is "not" so a compliment but its just number. Cheers again

waxen iris Dec 12, 2022, 9:06 PM

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Np

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