题目

异面直线a与b,在直线a上取4个点,在直线b上取n个点,以这些点为顶点构成96个三角形,则n的值为(    )A.5                  B.6                  C.7                  D.8 答案：答案：B解析：依题意可得,即6n+2n(n-1)=96,得n=6.

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