Question

A,B are disjoint sets n(A)=3,n(B)=2 then n(AuB)=?

Answer 1

Answer:

5

Step-by-step explanation:

Just add both the numbers and you will reach to the answer

Answer 2

Answer:

if A and B are disjoint sets AuB={ }

so

n(Anb)=0------1

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

n(AuB)=n(A)+n(B)+0

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

answer is 5