Blank dice - Revision history

Oscarlevin: Reverted edits by Ocafaromy (talk) to last revision by Zerrakhi

2010-11-24T12:51:03Z

Reverted edits by Ocafaromy (talk) to last revision by Zerrakhi

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	Here is a probability brain teaser that I remember from a math for elementary ed class I tutored.		Here is a probability brain teaser that I remember from a math for elementary ed class I tutored.

Ocafaromy at 23:58, 23 November 2010

2010-11-23T23:58:06Z

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	Here is a probability brain teaser that I remember from a math for elementary ed class I tutored.		Here is a probability brain teaser that I remember from a math for elementary ed class I tutored.

Zerrakhi at 13:51, 22 October 2010

2010-10-22T13:51:38Z

← Older revision		Revision as of 07:51, 22 October 2010
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	When you roll two six-sided fair dice, the total number of dots displayed can be anything from 2 to 12. However, some sums are more likely than others. Now suppose you have two six-sided fair dice, with no dots on any of the faces (they are blank). Armed with only a marker pen and your puzzle-solving prowess, how can you draw dots on the dice so that each possible sum will appear with equal probability?		When you roll two six-sided fair dice, the total number of dots displayed can be anything from 2 to 12. However, some sums are more likely than others. Now suppose you have two six-sided fair dice, with no dots on any of the faces (they are blank). Armed with only a marker pen and your puzzle-solving prowess, how can you draw dots on the dice so that each possible sum will appear with equal probability?

			{{Hint \| Some solutions are trivial, for example you could just leave all the sides blank so that the only possible sum (zero) appears with 100% probability. But thinking about the trivial solutions may well be the first step to finding better solutions in which each dice has a different number on each side.}}

	[[Category: Probability]]		[[Category: Probability]]

Zerrakhi: Hyphenation, internationalise by avoiding brand name, stylistic improvements.

2010-10-13T13:04:09Z

Hyphenation, internationalise by avoiding brand name, stylistic improvements.

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	==Puzzle==		==Puzzle==

	When you roll two six sided fair dice ~~and add~~ the dots displayed~~, you~~ can ~~get any number~~ from 2 to 12. However, some sums are more likely ~~to appear~~ than others. Now suppose you have two six sided fair dice, with no dots on any of the faces (they are blank). Armed with only a ~~Sharpe~~ and your puzzle solving prowess, draw dots on the dice so that each sum ~~which can appear~~ will appear with equal probability.		When you roll two six-sided fair dice, the total number of dots displayed can be anything from 2 to 12. However, some sums are more likely than others. Now suppose you have two six-sided fair dice, with no dots on any of the faces (they are blank). Armed with only a marker pen and your puzzle-solving prowess, how can you draw dots on the dice so that each possible sum will appear with equal probability?

	[[Category: Probability]]		[[Category: Probability]]

Oscarlevin: Created page with 'Here is a probability brain teaser that I remember from a math for elementary ed class I tutored. ==Puzzle== When you roll two six sided fair dice and add the dots displayed,…'

2010-04-08T00:38:50Z

Created page with 'Here is a probability brain teaser that I remember from a math for elementary ed class I tutored. ==Puzzle== When you roll two six sided fair dice and add the dots displayed,…'

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Here is a probability brain teaser that I remember from a math for elementary ed class I tutored.

==Puzzle==

When you roll two six sided fair dice and add the dots displayed, you can get any number from 2 to 12. However, some sums are more likely to appear than others. Now suppose you have two six sided fair dice, with no dots on any of the faces (they are blank). Armed with only a Sharpe and your puzzle solving prowess, draw dots on the dice so that each sum which can appear will appear with equal probability.

[[Category: Probability]]