男女各半,围坐一圈。是否存在一种坐法,使得每位学生左右两侧的学生均为异性学生?请说明理由。
The problem is not very clear. The word 均 seems to be extra. |
要满足条件,只能两男,两女,两男,两女,...交替而坐,男女人数都必须是偶数. |
I know what it means. But it is confusing and achen misunderstood it and got the wrong answer. |
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