6. If n (E) = 40, n (A) = 22, n (ANB) = 8 and n ((AUB)’) = 6, determine n(B)​

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6. If n (E) = 40, n (A) = 22, n (ANB) = 8 and n ((AUB)’) = 6, determine n(B)​

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King 3 years 2021-08-20T21:49:29+00:00 1 Answers 6 views 0

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  1. kiet
    0
    2021-08-20T21:51:22+00:00
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    Answer:

    4

    Step-by-step explanation:

    First n(AUB)=n(E) – n((AUB)’)

    So n(AUB) = 40 – 6 = 34

    Now all u hv to do is use the formulae,

    n(AUB) = n(A) + n(B) – n(ANB)

    So when u substitute above values,

    34=22 + n(B) – 8

    So,

    n(B) = 4

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