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प्रश्न
In a single throw of a pair of different dice, what is the probability of getting a total of 9 or 11?
उत्तर
Total number of outcomes on throwing a pair of dice = 6 × 6 = 36
Let F be the event of getting a total of 9 or 11.
∴ Favourable outcomes = {(3, 6), (4, 5), (5, 4), (6, 3), (5, 6), (6, 5)}.
Number of favourable outcomes = 6
Now,
`P(F)=6/36=1/6`
Thus, the probability of getting a total of 9 or 11 is `1/6`
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