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 math question

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eeNZ



Posts : 49
Join date : 2012-02-26

PostSubject: math question   Wed Dec 19, 2012 3:13 am

There are only 4 questions on a multiple choice test (each question has 4 choices, A B C or D). Assuming you guess all four questions, what is the probability that you will get at least one of them correct?
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Shoop

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Join date : 2012-01-20

PostSubject: Re: math question   Wed Dec 19, 2012 3:41 am

68,359375 % ?
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EnStekPaNnaWOLF



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Join date : 2012-01-21

PostSubject: Re: math question   Wed Dec 19, 2012 4:02 am

(1 - 0.75^4)*100 %
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Chakra



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PostSubject: Re: math question   Wed Dec 19, 2012 12:04 pm

This math question too easy. I got better.

You got five coins, each with a heads and tales tails. You flip each coin. What is the chance that you'll get at least two heads in a row? (i.e, HHTTT, THHHT, etc)

How many coins must you flip to get at least a 90% chance of getting two heads in a row? 99%?


Last edited by Chakra on Thu Dec 20, 2012 7:14 pm; edited 1 time in total
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Celestial_One



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Join date : 2012-01-23

PostSubject: Re: math question   Thu Dec 20, 2012 6:09 pm

I kind of agree with chakra. I got 11/32 for the first of your kwestuns. I'm drunk and the other 1 s are 2 hard to think thru right now.

Also. Super filunny how each coin has a tale to tell... only way to tell a tale is if you have a head. Zingggggg.
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