Question 68849: You roll a dice. What is the probability the sum of the first roll is 7 and the sum of the second roll is 10?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! You roll a dice. What is the probability the sum of the first roll is 7 and the sum of the second roll is 10?
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To get a 7: 1,6;2,5;3,4;4,3;5,2;6,1
Prob(sum = 7) = 6/36 = 1/6
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To get a 10: 4,6; 5,5; 6,4
Prob (sum = 10)= 3/36 = 1/12
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Prob(sum is 7 and sum is 10)= 1/6 * 1/12 = 1/72
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Cheers,
Stan H.
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