Question

If n(A)=300,n(AUB)=500,n(ANB)=50 and n(B')=350,find n(B) and n(U).​

Answer 1

Answer:

n(B)=250

n(U)=600

Step-by-step explanation:

n(A)=300

n(AUB)=500

n(AnB) =50

n(AUB)= n(A) +n(B)- n(AnB)

500=300+n(B)-50

500-250=n(B)

n(B)=250

n(B')=350

n(U)-n(B)=350

n(U)=350+250

=600