HEREDITY
BASICS OF PROBABILITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Getting number 15 when rolling a dice is
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Impossible
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Unlikely
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Certain
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Equally Likely
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Explanation:
Detailed explanation-1: -In other words, the probability P equals p to the power n, or P = pⁿ = (1/s)ⁿ . If we consider three 20-sided dice, the chance of rolling 15 on each of them is: P = (1/20)³ = 0.000125 (or P = 1.25.
Detailed explanation-2: -15 = 6 + 6 + 3 = 6 + 5 + 4 = 5 + 5 + 5. 16 = 6 + 6 + 4 = 5 + 5 + 6. 17 = 6 + 6 + 5. 18 = 6 + 6 + 6.
Detailed explanation-3: -If three dice are thrown simultaneously then probability of getting a sum of 15 is 5/108 .
Detailed explanation-4: -Therefore, required probability = 15/(65)
There is 1 question to complete.