Chessboard Coin (Posted on 2004-10-08)

	Submitted by SilverKnight
Rating: 2.8333 (12 votes)
Solution:	(Hide)
32% For the coin to fall within a white square, it (its centre) must fall into a smaller area inside a white square. This smaller area will also be a square with its length 2cm shorter than the 10cm white square. (If the coin falls at the very edge of the white square, its centre will be on the edge of this smaller white square the border of this square will be 1cm away from the border of the larger square) So it must land within this area = 64squared cm. The area of a white square is 100 square cm = .64 but only every 2nd square is white, so answer = .32

	Subject	Author	Date
	Solution (a look at three cases)	Dej Mar	2008-02-25 23:44:02
	answer	K Sengupta	2007-09-20 16:04:12
	re(5): Dumb Question	venkatesh	2005-10-22 06:19:57
	re(4): Dumb Question	john	2005-06-07 17:02:05
	re: On edge	ajosin	2005-03-02 21:04:20
	re(2): Yup	RandyOrton	2004-10-18 17:38:16
	On edge	bob909	2004-10-11 06:42:02
	re: Yup	Nosher	2004-10-10 21:53:34
	re: Solution + Explanation	Vee-Liem Veefessional	2004-10-10 03:42:56
	No Subject	Vee-Liem Veefessional	2004-10-10 03:38:42
	no correct answer	Ben Buergel	2004-10-10 01:39:36
	re(3): Dumb Question	Charlie	2004-10-08 14:01:40
	re(2): Dumb Question	Richard	2004-10-08 13:40:02
	re: Dumb Question	Charlie	2004-10-08 12:36:45
	Dumb Question	Richard	2004-10-08 12:15:22
	Yup	RandyOrton	2004-10-08 10:14:12
	odds	rixar	2004-10-08 09:52:04
	solution	Charlie	2004-10-08 09:29:35
	I agree	RandyOrton	2004-10-08 09:15:11
	Solution + Explanation	nikki	2004-10-08 08:46:23
	Crude calculations !	Syzygy	2004-10-08 08:41:48