There are 10 points on a circle. A hexagon can be formed by linking 6 of the 10 points. How many such hexagons are possible?
Pick.
A) 60  B) 120  C) 200  D) 210  E) 600
6 points can be selected out of 10 points in 10C6 ways   =10 !/6!*4!=210   Ans 210
<result>D</result>
There are 10 points on a circle. A hexagon can be formed by linking 6 of the 10 points. How many such hexagons are possible?