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There are 42 or 16 outcomes for rolling 2 described dice. There are 2 ways to obtain a 7: 3,4 & 4,3. So, if two tetrahedral dice are rolled the probability the sum is 7 is 2/16 or 1/8 or 0.125.

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Q: A tetrahedral die has 4 triangular sides numbered 1 to4 If two tetrahedral dice are rolled what is the probability the sum is 7?
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