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Question

Two dice are thrown. The probability that the sum of the points on two dice will be 7, is :

A
536
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B
636
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C
736
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D
836
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Solution

The correct option is B 636
The total number of possible ways is 6×6=36
n(S)=36
Let E be the event that sum of the points on two dice is 7
E={(1,6),(2,5),(3,4),(4,3),(5,2),(6,1)}
Then n(E)=6
P(E)=n(E)n(S)=636

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