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Custom Dice (Posted on 2006-11-16) Difficulty: 2 of 5
You are given blank six-sided dice, with equal weight on each side (fair dice). You're allowed to write on each side of each die a number between 0 and 6. Numbers may repeat themselves on a single die, so for example, one die can have five 4s and one 0.

1) Can you create two such dice which, if they are rolled and their results added, will give equal odds for every number from 1 to 12?

2) Can you create three such dice which, if they are rolled and their results added, will give equal odds for every number from 1 to 18?

(NOTE: Don't get smart and make all the dice all 0s. The probability of getting 0 should be 0)

No Solution Yet Submitted by TamTam    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Puzzle Thoughts Comment 6 of 6 |
(1) One die has the numbers 1,2,3,4,5,6 and the other has 0,0,0,6,6,6
Thus there is a 1/12 chance to get every number from 1 to 12.

2) This is impossible. In order for all the numbers from 1 to 18 to have equal probability, there need to be 6^3/18 = 12 different ways to get each q

  Posted by K Sengupta on 2023-03-12 23:06:20
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