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Thread: Probability

  1. #1
    Within my grasp! computer-bot's Avatar
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    Probability

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    Quantity A
    The probability that 2 people chosen at random were born on the same day of the week.

    Quantity B
    The probability that 2 people chosen at random were born in the same month.

  2. #2
    Trying to make mom and pop proud
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    Re: Probability

    I think answer should be 7 and 30....not sure....

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    GRE-GMAT Instructor Brent Hanneson's Avatar
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    Re: Probability

    Quote Originally Posted by Wise geek View Post
    I think answer should be 7 and 30....not sure....
    We're talking about probabilities, and all probabilities range from 0 to 1

    Cheers,
    Brent

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    Hope!!
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    Re: Probability

    A)1/7
    One way to do this is assign any one day of the week to the first person and so the probability of the second person to
    have birthday on the same day as first one will be 1/7
    B)
    Same way for B it will be 1/30 or 1/31(depending on the month)

    Hence answer will be A>B

    Hope i got it correct

  5. #5
    An Urch Guru Pundit Swami Sage
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    Re: Probability

    I would go with 1/7 and 1/12.

    Still A>B

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