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Precalculus
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OpenStudy (anonymous):
HOw many lines are determined by 8 points, no 3 of which are collinear? HOw many triangles are determined by the same points if no 4 are coplanar?
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OpenStudy (anonymous):
some is it going to be 8C2=28 and 8C3=56
OpenStudy (anonymous):
Sorry, 8choose2 and 8choose3.
OpenStudy (anonymous):
Yup!
OpenStudy (anonymous):
oh okay thank you! :)
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