You are rolling two dice at the same time. What is the probability of rolling a sum of 6 or 7? A) 6 42 B) 11 36 C) 17 36 D) 1
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There are 36 possible combinations of rolling 2 dice (6*6)
There are 5 possible ways of throwing a 6, (1,5),(2,4),(3,3),(4,2),(5,1)
There are 6 possible ways of throwing a 7, (1,6),(2,5),(3,4),(4,3),(5,2),(6,1)
So there are 11 possible ways of rolling a six or seven out of 36 possible rolls.
The probability is 11/36.
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