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When two fair dice are rolled, what is the probability that at least o
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16 Jan 2023, 02:34
16 Jan 2023, 02:34
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45% (00:41) wrong based on 31 sessions
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When two fair dice are rolled, what is the probability that at least one of the numbers will be even?
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
Re: When two fair dice are rolled, what is the probability that at least o
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18 Jan 2023, 05:00
18 Jan 2023, 05:00
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Problems of this type (characterized by wording such as "at least”) are often most easily solved using the “1 - x ” shortcut. It is easier to solve for the probability of the event not happening, because it is easily defined: both numbers come up odd.
The probability of each number coming up odd is 3/6 Since the two dice are independent, the probability of both coming up odd is 1/2 * 1/2 which equals 1/4 so the probability of getting at least one even number is 1-1/4 or 3/4
Problems of this type (characterized by wording such as "at least”) are often most easily solved using the “1 - x ” shortcut. It is easier to solve for the probability of the event not happening, because it is easily defined: both numbers come up odd.
The probability of each number coming up odd is 3/6 Since the two dice are independent, the probability of both coming up odd is 1/2 * 1/2 which equals 1/4 so the probability of getting at least one even number is 1-1/4 or 3/4
gmatclubot
Re: When two fair dice are rolled, what is the probability that at least o [#permalink]
18 Jan 2023, 05:00
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