HEREDITY
BASICS OF PROBABILITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two dice are rolled. What is the probability that the sum is 7 or 8?
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13/36
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1/4
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5/18
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11/36
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1/3
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Explanation:
Detailed explanation-1: -The probability of both outcomes is equal i.e. 50% or 1/2. So, the probability of an event is Favorable outcomes/Total number of outcomes. It is denoted with the parenthesis i.e. P(Event). What is Sample Space?
Detailed explanation-2: -Hence probability of 7 or 11 =61+181=184=92.
Detailed explanation-3: -Out of these 36 there are 8 that add up to either 7 or 11, so the chance of rolling a 7 or 11 is 8/36 = 2/9.
Detailed explanation-4: -∴ The probability of getting sum as 7 when two dice are thrown is 1/6.
There is 1 question to complete.