Question

if p={2,3,4,6},q={3,5,7},r={1,3,5,7,10},find p-q and find q-r and find r-p

Answer 1

Given that:

p={2,3,4,6}

q={3,6,7}

r={1,3,5,7,10}

P-q=p{2,3,4,6} - q{3,5,7}

={2,4,6}

Therefore p-q={2,4,6}

r-p=r{1,3,5,7,10} - p{2,3,4,6}

={1,5,7,10}

Therefore r-p={1,5,7,10}

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Answer 2

P-Q=All those elements in Q not in P, try on your own now!