Question

Solve Q5

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Answer 1

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Refer to the attachment

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Answer 2

Let us consider the sets of A, B and C as follows

A = {a, b, c}

B = {a, b, c, d, e}

C = {a, b, c, d, e, f, g}

So here, we are taking A as the subset of B and B is the subset of C.

.•. C - B = {f,g}

.•. C - A= {d,e,f,g}

Here, we can find that the C - B contains the values of C - A and C - A has more values other than C - B

Hence we can prove that C - B is the subset of C - A if A is the subset of B.