If k , m , and  p are integers, is  k – m – p  odd? (1)     k  and m are even and p is odd. (2)     k , m , and  p are consecutive integers.d_出国考试答疑器_GMAT

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If k , m , and p are integers, is k – m – p odd?

(1) k and m are even and p is odd.

(2) k , m , and p are consecutive integers.

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想请问这道题，为什么2单独可以呢？k=3a+2 k+7=3a+9可以被三整除，那我怎么知道3a+2一定被2整除呢？[img=/uploads/askimgs/gmat-20230224-120644.jpeg]

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