Question

14) If A and B are two sets, such
that n(A-B)=15 ,n(AnB) = 10 and
n(B-A) =25 ,n (AUB) is

a)10
b)30
c)40
d)50​

Answer 1

Answer:

Given,

n(A-B) =15

n(AnB) =10

n(B-A) =25

Now, n(AuB) ={n(A-B) +n(AnB) }+{n(B-A) +n(AnB) }-n(AnB)

=(15+10) +(25+10) -10

=25+35-10

=60-10

=50

Answer 2

Answer:

The answer is (d) 50.

Step-by-step explanation:

Hope it will help you.