SETS-1

If n(A)= 173 , n(B)= 160 and n(AnB)=140, find n(AuB).

Solution

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

             = 173 + 160 – 140

             = 333 – 140

             = 193

Hence n(AuB) = 193 answer

TRY THIS…………………………….

If n(A)= 146 , n(B)= 164 and n(AnB)=130, find n(AuB).