Question

If ACB, n(A)=12 and n(B)=20, then the value of n (B-A) is ​

Answer 1

Answer:

The answer is -8.

Step-by-step explanation:

n(A)-n(B)=20-12

=-8

Answer 2

Answer:

The answer is +8

(B-A) refers to elements present in B but not in A. Therefore it takes a positive integral value always.

n(B)-n(A)

=20-12

=8