Question

If n(a)=15 , n(aub)=29 ,n(anb)=7 then n(anb) ?​

Answer 1

Answer

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Step-by-step explanation:

n(a)=15

n(a∪b)=29

n(a∩b)=7

n(b) =?

n(a∪b)=n(a)+n(b)-n(a∩b)

29 = 15+n(b)-7

29=8+n(b)

29-8=n(b)

n(b)=21