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-   -   Probability brain twister (https://www.askmehelpdesk.com/showthread.php?t=656106)

  • Apr 30, 2012, 10:48 PM
    Nydaa93
    Probability brain twister
    Please help:

    If you were to randomly choose and answer to this question, what is the probability of you being correct?

    A) 25%
    B) 50%
    C) 35%
    D) 25%
  • Apr 30, 2012, 11:11 PM
    TimHathaway98
    25%
  • Apr 30, 2012, 11:28 PM
    FirstChair
    What question? There is no answer because there is no question. I may not always be correct, but I'm never wrong. ;-)
  • Apr 30, 2012, 11:34 PM
    TimHathaway98
    100% is the highest% you can get... there are 4 options with each one being 25% since 25X4=100
  • May 1, 2012, 08:23 AM
    jcaron2
    There is a 0% chance that you'll be correct.

    TimHathaway is correct that there's a 25% chance of picking any one particular answer. However, both A and D say "25%"; therefore, you'll randomly select "25%" as an answer 50% of the time. Clearly, therefore, 25% cannot be correct.

    Meanwhile, the 50% answer only appears once, so there's only a 25% chance that you'll choose it. Therefore, it too can be eliminated as the correct answer.

    Finally, 35% also only appear once, so it likewise will be chosen 25% of the time. Again, clearly not the correct answer.

    Thus, since none of the multiple choice answers are correct, you have a 0% chance of getting the correct answer.
  • May 1, 2012, 08:24 AM
    Nydaa93
    Yes but you have to consider that 25% is there twice.
  • May 1, 2012, 06:05 PM
    TimHathaway98
    OK, you guys just lost me... I,thought it was 25%, but seeing there are 2 25's, I guess it could've been 50% also
  • May 2, 2012, 10:36 AM
    physic

    there are 4 option and 3 chance
    answer:
  • May 3, 2012, 03:43 AM
    jcaron2
    Quote:

    Originally Posted by physic View Post

    there are 4 option and 3 chance
    answer:

    33.33% isn't one of the available answers! Therefore, you can't possibly be correct 33.33% of the time.

    The answer is 0%.
  • May 7, 2012, 04:51 AM
    FirstChair
    The key word is "randomly" therefore I would be correct every time I randomly choose. I Я SMART!

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