Maharashtra State BoardHSC Science (General) 11th
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Two fair dice are thrown. State the sample space and write favorable outcomes for the following event: B: Sum of numbers on two dice is 7 - Mathematics and Statistics

Sum

Two fair dice are thrown. State the sample space and write favorable outcomes for the following event:

B: Sum of numbers on two dice is 7

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Solution

When two fair dice are tossed, the sample space S is given by

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)}

B ≡ event that sum of the numbers on two dice is 7.

∴ B = {(1, 6), (2, 5), (3, 4), (4, 3), (5, 2), (6, 1)}

Concept: Basic Terminologies
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