Question

If A={1,2,3,4} and B={3,4,5} , then n(B−A)=
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Answer 1

Answer:

It's {5}

Step-by-step explanation:

Given A={1,2,3,4}

B={3,4,5}

(B-A)={3,4,5}-{1,2,3,4}

={5}

Answer 2

Answer:

answer is attached

Step-by-step explanation:

hope it helps you