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The probability of rolling a sum not less than 9
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The probability of rolling a sum not less than 9

User Alois Mahdal
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Write out all the possible solutions (if its like 2, 1 and 1,2 only write it down once, no repititions.) 15 have a sum less than nine and there were 21 possible answers so the answer is 15/21. Does that help?

User Colin Skow
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