Question

hey guys plz plz answer this question​

Answer 1

Step-by-step explanation:

if A is subset of B

then,

1. n(A U B)=n(B)

n(A UB) =15

2. n(A intersection B)=n(A)

n(A intersection B)= 10

3. n(A-B) = null set

4. n(B-A) = n(A) - n(B)

n(B-A)= 15-10

n(B-A)=5

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