Question

If n(A) = 35, n(B) = 40 and n(A U B ) = 50, find n( A∩ B ) ​

Answer 1

Answer:

25

Step-by-step explanation:

n( A∩ B ) = n(A)+n(B)-n(A U B )

= 35+40-50

= 75-50

= 25

Answer 2

Answer:

25

Step-by-step explanation:

n(A U B) = n(A) + n(B) - n(AΠB)

50 = 35 + 40 - x

x = 75-50 = 25