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March 29, 2015

March 29, 2015

Posted by **please help me out!!** on Tuesday, April 2, 2013 at 3:56am.

- GEOmetry(Special Coin Placement) -
**Suraj**, Tuesday, April 2, 2013 at 5:01amThe total number of ways of choosing rows is 4C3, columns 10C3

Total number of ways of choosing 3 tiles among 40(4X10) is 40C3

Answer = (4C3*10C3)/40C3

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