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36 votes
36 votes
a six-sided die was rolled twice find the probability that the larger of the two rolls was equal to six

User NastyDiaper
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1 Answer

7 votes
7 votes

Each die has 6 possible outputs, so rolling two dice we have a total of 6 * 6 = 36 possible outputs.

From these 36 outputs, the outputs that have the larger of the two rolls equal to 6 are:

(1, 6), (2, 6), (3, 6), (4, 6), (5, 6),

(6, 1), (6, 2), (6, 3), (6, 4), (6, 5),

(6, 6).

We have a total of 11 outputs where the larger of the two rolls is equal to 6. So the probability of having any of these outputs is:


\begin{gathered} \text{Number of possible outputs: }N\mleft(total\mright)=36 \\ \text{Number of desired outputs: }N\mleft(desired\mright)=11 \\ \text{Probability of having a desired output:} \\ P=\frac{N\mleft(\text{desired}\mright)}{N\mleft(\text{total}\mright)}=(11)/(36) \end{gathered}

So the probability that the larger of the two rolls was equal to six​ is 11/36.

User Muruganandham K
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