Question

If n(a)=36, n(b)=10, n(aub)=40, and n(a')=27 find n(u)

Answer 1

The answer is n(u) = 63.

Given,

n(a) = 36

n(b)= 10

n(aUb )= 40

n(a')= 27

To Find,

The value of n(u) = ?

Solution,

We know that,

n(a') = n(u) - n(a)

We need to find n(u),

so, n(u) = n(a') + n(a)

= 27 + 36

= 63

Therefore, n(u) =63

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