Sum of 7 is possible if (1,6),(2,5),(3,4),(4,3),(5,2) and (6,1)

There are six possibilities favorable to the sum of 7

Hence the required probability = 6/36 =1/6

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Apr 2nd, 2015

Since there is no response from you, I hope it meets your expectation.

Just to further enlighten you, the sample space consists of 36 points mentioned in my answer. Favorable event has 6 points. Thus the probability is 6/36=1/6.

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