Maharashtra State BoardHSC Commerce 11th
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Two dice are thrown. Write favourable outcomes for the following event.Q: Sum of the numbers on two dice is 7. - Mathematics and Statistics

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Sum

Two dice are thrown. Write favourable outcomes for the following event.
Q: Sum of the numbers on two dice is 7.

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Solution

When two dice are thrown, all possible outcomes are
S = {(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6), (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6), (3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6), (4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (4, 6), (5, 1), (5, 2), (5, 3), (5, 4), (5, 5), (5, 6), (6, 1), (6, 2), (6, 3), (6, 4), (6, 5), (6, 6)}
∴ n(S) = 36

Let Q: Sum of the numbers on two dice is 7.
∴ Q = {(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), (6,1)}
∴ n(Q) = 6

Concept: Introduction of Probability
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