Question

n(a) = 25 n(b) = 10 and also b subset of a then n(b-a) =?​

Answer 1

Answer:

it is null set because a have each an every element of b a minus b means that element of b but not in a

Answer 2

Step-by-step explanation:

n(b-a)=n(10-25)

=n(-15)

hope it helps you