Question

Let A = {7, 8, 9, 10, 11, 12} and
B = {7, 10, 14, 15). What is the number
of elements in (A - B) and (B - A)
respectively?​

Answer 1

Answer:

 (A-B) =  {8 , 9 , 11 , 12}

n(A-B) = 4

(B-A) = {14 , 15}

n(B-A)=2

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Answer 2

Answer:

(A-B)= 4

(B-A)= 2

Step-by-step explanation: