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4. Complete the definitions for A, B, C using the sets R, Z, N or Q so that A C B, A C C and

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4. Complete the definitions for A, B, C using the sets R, Z, N or Q so that A C B, A C C and B Z C. A= (re- : x>4) B = (TE : x'>4} C = (re - : x'>4) 5. Let n be a natural number and M. = {kn : k E z} be the multiples of n. What is the relationship between Me and Me

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