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26 Apr 2017, 08:35
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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The circle above has 10 points on its edge. How many different hexagons can be drawn that use six of these points as its vertices?
A. 30,240
B. 1,008
C. 252
D. 210
E. 10
Attachment:
image007.gif [ 620 Bytes | Viewed 1943 times ]
27 Apr 2017, 05:47
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Bunuel
The circle above has 10 points on its edge. How many different hexagons can be drawn that use six of these points as its vertices?
A. 30,240
B. 1,008
C. 252
D. 210
E. 10
Attachment:
image007.gif
A hexagon has 6 vertices.
Since no three points are in a line, we are basically looking for selecting 6 points out of 10..
10C6=\(\frac{10!}{6!4!}=\frac{10*9*8*7}{4*3*2}\)=310
D
27 Apr 2017, 09:20
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10C6 = 210.
Ans D
Ans D
