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2d6: How Often A Number Occurs

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Test Occurs Chances Percent
2- 1 1 2.78%
3- 2 3 8.33%
4- 3 6 16.67%
5- 4 10 27.78%
6- 5 15 41.67%
7- 6 21 58.33%
8- 5 26 72.22%
9- 4 30 83.33%
10- 3 33 91.67%
11- 2 35 97.22%
12- 1 36 100.00%

Like the 1d6: Roll Succeeds page, this page shows the chances of rolling a certain total or less. If you are trying to roll an 8 or less (8-) on 2d6, there are seven possible totals that would succeed: 2, 3, 4, 5, 6, 7, 8. A total of 9, 10, 11, or 12 would fail the test.

Each of the successful totals occurs differing numbers of times in the table. Frex, 2 occurs once, 3 occurs twice, etc. In order to determine the chance of rolling a total of 8-, we add up all the "chances" for each number that would be a success. In our example, this would be the total number of times each total from 2 to 8 occurs: 1+2+3+4+5+6+5, for a total of 26 possible rolls that would be a success in the 36 total possible rolls, 26/36 or a 72% chance for any rolled total to be a success.

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Copyright © 1999 Bob Simpson. All Rights Reserved.
Last updated: 2001 Nov 29







Last modified: 2002-Feb-14 19:53:08

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