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More ways to get Braingle...

Odds Oddities

Probability puzzles require you to weigh all the possibilities and pick the most likely outcome.

 

Puzzle ID:#18290
Fun:*** (2.12)
Difficulty:** (1.35)
Category:Probability
Submitted By:wizecracker55A****
Corrected By:Winner4600

 

 

 



You roll a die 24 times, and the results are as follows:

[1] 6 times
[2] 4 times
[3] 5 times
[4] 3 times
[5] 6 times
[6] 0 times

What are the odds of the twenty fifth die being a six?




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Comments

canu*
Jul 20, 2004

What are the odds that it is a loaded die?
Mogmatt16Ava*
Jul 20, 2004

shouldn't this be trick?
jimbo*au*
Jul 23, 2004

As the comments show, there's no trick. It's just very elementary Mathematics.
jimbo*au*
Jul 23, 2004

Sorry..I meant you can tell from the ratings..!
Poker*us*
Aug 01, 2004

How can you roll a 0 on a die?
jecrwin
Aug 12, 2004

Please do NOT misuse the word odds to mean probability. They are two different things. Look at the previous comment I made on another odds question to see why.

Odds are p/1-p. Thus, the odds are 1:5. (1/6)/(5/6) = 1/5 or 1:5 odds
rose_rox*ca*
Sep 23, 2004

Poker, it's meant that the die never landed on 6.
Tongue-TwisterAus
Nov 07, 2004

What?
(user deleted)
Dec 11, 2004

there is only six sides and not one of them has a zero or no dots on it so the sixth number is totally wrong the numbers can only go from 1-6 no other number is available!!!!
pi202**
Dec 16, 2004

BlackCat - didn't you read rose_rox's comment? For clarification, the question means that out of the 24 rolls of the die, a [1] was rolled 6 times, a [2] was rolled 4 times, a [3] was rolled 5 times, a [4] was rolled 3 times, a [5] was rolled 6 times and a [6] was never rolled.
kuru
Dec 29, 2004

finaly one i got right HAHaha
mr_brainiac*
Mar 15, 2005

The Zero is the number of times he rolled a 6 in the first 24 rolls, not a number on the dice
Leviathan
Apr 02, 2005

i didn't think hard enough
(user deleted)
May 04, 2005

I....hate......math.....
Inuu
Aug 25, 2005

jecrwin dear, trying to act smart aye? we all know it's 1:6 not 1:5 .LOL
hidentreasure**
Oct 30, 2005

Sssoooooo easy I'm 12 and I got it
thecount89
Dec 08, 2005

Actually, jecrwin was right.

Since it's a ratio, the ODDS (not the same thing as probability) would be 5:1. However, the PROBABILITY (not the same thing as odds) would be 1/6.

It's kind of like saying, for every 5, there is then 1.... when altogether, there are 6.
stm8r1us*
Dec 09, 2005

A more interesting question would be what are the odds that a 6 is rolled on the twenty-fifth roll given the previous 24 rolls? For each roll the chance that it ISN'T a 6 is 5/6, so the chance of no 6's rolled in 25 tries is 1-((5/6)^25)=.98952, or nearly a 99% chance that the 25th roll will be a 6.
SPUTNIK2Aus*
Jan 20, 2006

Good one, thanks for teaser
cosine89
Feb 02, 2006

The answer is incorrect. Odds are the comparison of favorable outcomes to unfavorable outcomes. There is one 6 and five are not 6. So the answer is 1:5.
jsdodgersAus*
Apr 05, 2008

This was WAY to easy. I don't see how all these people are having problems with it.
KarateGirl098tus*
Nov 12, 2009

Super-easy. But fun.



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