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	Four dots are randomly placed on an 8x8 grid		2010-02-26
		bobbym pose la question : Four dots are randomly placed on an 8x8 grid, compute the probability that no row or column contains more than one dot. Claude Tardif lui répond.
	Grain of rice on a chess board		2009-03-30
		andy pose la question : Is there an easy way for my students to find out 8 to the power of 21 to solve the grains of rice doubling investigation on a chessboard? Any suggestions welcome. Thanks very much Robert Dawson and Claude Tardif lui répond.
	Squares on a chess board		2001-04-11
		Tom pose la question : It was once claimed that there are 204 squares on an ordinary chessboard (8sq. x 8sq.) Can you justify this claim? "PLEASE" include pictures. How many rectangles are there on an ordinary chessboard? (8sq. x 8sq.) "PLEASE" include pictures. Penny Nom lui répond.
	How many squares are on a chessboard?		1999-10-20
		Tchilco pose la question : How many squares are on a chessboard? Penny Nom and Claude Tardif lui répond.

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