GWD 4-3 没人问啊?

Q3:

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.

我选D, 因为我觉得三个连续整数相减为偶数, 所以可以判定k-m-p不是奇数.

你们认为呢?

选A

条件一,单独充分;

条件二,三个连续整数分两种考虑:奇偶奇,偶奇偶,前者相减为偶,后者相减为奇,答案不唯一.

所以选A

我选A。

(1)   k and m are even and p is odd.

k-m肯定是偶数，所以k-m-p肯定是基数。

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

5-6-7=-8

6-7-8=-9

iiiiii