Question

if A is a subset of B then n(A union B) what is its formula ​

Answer 1

Answer:

n(B)

Step-by-step explanation:

If A ⊆ B, then A ∪ B = B.

So n(A ∪ B) = n(B).

Answer 2

A is a subset of B

So , n(A union B) = n(B)