GWD29-8

meckychen · 发表于 2010-1-27 13:28:24

Q8:

S is a set of points in the plane. How many distinct triangles can be drawn that have three of the points in S as vertices?

(1) The number of distinct points in S is 5.

(2) No three of the points in S are collinear.

Ans: C

why?

thank you,

meckychen · 发表于 2010-1-27 13:30:07

S is a set of points in the plane. How many distinct triangles can be drawn that have three of the points in S as vertices?
(1) The number of distinct points in S is 5.
(2) No three of the points in S are collinear
Ans:C
Why?

GWD29-8

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