Question

n(A)=12
n(AintersectionB)=5
then n (A-B) = ?


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Answer 1

nA=12 nB=5. nA-B= 12-5=7

Answer 2

Answer:

n(A-B) = 12-5 =7

Step-by-step explanation:

n(A intersection B ) will give common elements of Both A and B

Also, A-B means we are subtracting Elements of A from B. Hence, Common elements will be also removed from the set i.e, n(A intersection B)