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3. Let P, Q and R be sets, P R.Q (a) P = (P U Q)-P (b) P UQ (P-Q)u O (c) (P U Q)c

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3. Let P, Q and R be sets, P R.Q (a) P = (P U Q)-P (b) P UQ (P-Q)u O (c) (P U Q)c PCU Q (d) Pn R = P 4. Let P, Q and R be the sets P={n| n E N, 2 n 10) R={nInEN, 1 n

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