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Three dices are thrown simultaneously. What is the probability of getting three numbers whose sum is 13?

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Three dices are thrown simultaneously. What is the probability of getting three numbers whose sum is 13?
posted Apr 4, 2017 by anonymous

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1 Answer

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Total number of possibilities = 6 × 6 × 6 = 216
Out comes with thier sum = 13
1. 1,6,6 ===> 6 possibilities
2. 2,5,6 ===> 6 possibilities
3. 3,5,5 ===> 6 possibilities
4. 4,5,4 ===> 6 possibilities
5. 5,4,4 ===> 6 possibilities (should not be counted as they are the same as the previous possibilities)
6. 6,3,4 ===> 6 possibilities
Total possibilities in favour of the required event = 30
Therefore required probability = 30/216 = 13.8889%.

answer Apr 4, 2017 by Tejas Naik
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