Question

if n(A)=20,n(B)=28,and n(AuB)=36 then n(AnB)=?

Answer 1

n(A)=20
n(B)=28
n(AuB)=36. eq1
20*u*28=36/n
560u=36/n
un=36/560. eq2

20*n2*28
560*n2
n=√560
n=23.6643191323 (answer)

hope this will help you
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