Posted by A on Friday, November 16, 2007 at 6:45pm.
Each time you roll, your probability of rolling a 6 is 1/6.
You have four rolls, so multiply by 4 to get 4/6, or 2/3.
No Michael, that is not right
The key word is "at least one six", meaning it could be one six, two sixes, thre or four sixes.
What we don't want is NO sixes
So to calculate the prob of no sixes in 4 tries is (5/6)^4
So the prob of at least one six is
1 = (5/6)^4
= .5177
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