The multiples of 4 are numbers of the form 4*k where k is an integer.4*k = 2*(2*k) that is, 4*k is a multiple of 2 - in other word, it is even.
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Not always as for example 36 is a multiple of 4 but not of 8
2, 4, 6 All even numbers have even multiples.
No. 6 is an even number.
Yes.
2, 4, 6