Rolling Two Die

Sam is rolling two die and adding the sum that appears on the two faces. Which sum is most likely to occur?

6 4 5 7 9

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2 solutions

Mahdi Raza
Jun 11, 2020

\[\begin{array}{c|cccccc} &1 &2 &3 &4 &5 &6 \\ \hline \\ 1& 2& 3& 4& 5& 6& {\color{Blue}{7}}& \\ 2& 3& 4& 5& 6& {\color{Blue}{7}}& 8& \\ 3& 4& 5& 6& {\color{Blue}{7}}& 8& 9& \\ 4& 5& 6& {\color{Blue}{7}}& 8& 9& 10& \\ 5& 6& {\color{Blue}{7}}& 8& 9& 10& 11& \\ 6& {\color{Blue}{7}}& 8& 9& 10& 11& 12& \end{array}

\implies \frac{6}{36}

\implies \boxed{\frac{1}{6}}\]

7 appears the most times with a probability of 1 6 \frac{1}{6}

Thank you and I would solve it the same way, precise and clear.

Hana Wehbi - 12 months ago

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Sure, Welcome!

Mahdi Raza - 12 months ago

7 has the most possibilities to be formed with 2 dice: 1-6; 2-5; 3-4; 4-3; 5-2; 6-1.

Yes, you are right, but if we mentioned all the sums and showed that 7 7 appears the most, it would be more convincing. Thank you for sharing your solution.

Hana Wehbi - 3 years, 3 months ago

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