Question

n(A)=22,n(A)=18,n(AuB)=35,then find n(A n B)(explanation needed )(with explanation=brainliest!)

Answer 1

Step-by-step explanation:

given ; n(A) =22, n(B) =18,n(AuB) =35

so......

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

35=22+18-n(AnB)

35=40-n(AnB)

-5=-n(AnB)

n(AnB) =5