Question

If n(A) = 35, n(B) = 40 and n( A UB) = 70,find n(A∩B)

n(AUB) = n(A) + _____ – n(A∩B)

70 = _____+ 40 - n(A∩B)

70 = ______- n(A∩B)

Hence, n(A∩B) = ________

Fill in the blanks with proper answer​

Answer 1

Answer:

1.) n(B)

2.) 35

3.) 75

hence, answer is 75

Answer 2

Answer:

(1). n(b)

(2). 35

(3). 5