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#1 2007-10-23 03:47:50
- mikau
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- Registered: 2005-08-22
- Posts: 1,504
quick probability question
suppose you flip a coin, if its heads, i have to guess a number between 1 and 6 and roll a die to see if i'm right. If its tails, i have to guess a number between 1 and 12 and role a 12 sided die.
What are the odds that i will guess correct?
A logarithm is just a misspelled algorithm.
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#2 2007-10-23 06:40:57
- mathsyperson
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- Registered: 2005-06-22
- Posts: 4,900
Re: quick probability question
1/2*1/6 + 1/2*1/12 = 1/8.
Why did the vector cross the road?
It wanted to be normal.
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#3 2007-10-23 06:51:08
- pi man
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- Registered: 2006-07-06
- Posts: 251
Re: quick probability question
Nevermind.
Last edited by pi man (2007-10-23 06:51:42)
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#4 2007-10-23 15:29:09
- mikau
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- Registered: 2005-08-22
- Posts: 1,504
Re: quick probability question
ah ha!
so, if you had to roll a 1 in 3 choice that led you to a 1/2, 1/3, 1/4 guess respectively, the probabability would be
1/3(1/2 + 1/3 + 1/4) Correct?
A logarithm is just a misspelled algorithm.
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#5 2007-10-24 00:56:26
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: quick probability question
Yeppers!
Why did the vector cross the road?
It wanted to be normal.
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