Question

0
Q.4: n(A) = 15, n(B) = 20,
n(AUB) = 11 then find n(AnB)
=? *
​

Answer 1

Answer:

n(AnB)   =  24

Step-by-step explanation:

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

  11          =   15  +  20  -  n(AnB)

  11          =   35   -  n(AnB)

n(AnB)   =  35   -  11

n(AnB)   =  24