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Chessboard (Posted on 2004-01-14) Difficulty: 3 of 5
Three different squares are chosen randomly on a chessboard.

What is the probability that they lie in the same diagonal?

No Solution Yet Submitted by Ravi Raja    
Rating: 3.5000 (8 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Chessboard | Comment 11 of 20 |
The total number of occurences is
64C3
and the desirable outcomes is
16C3

So the required probability is

16
C
3
---------------
64
C
3
=0.037878.....
  Posted by Purna on 2004-01-24 06:32:37
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