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What are the Odds?

Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.

 

Fun:*** (2.77)
Difficulty:** (1.9)
Category:Trick
Submitted By:christiangrl

 



If you choose to answer this question at random, what are the chances you will be correct?

A) 25%
B) 50%
C) 60%
D) 25%


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Comments

Posted by kitty-cat on Nov 18, 2012

First comment!

Great teaser, I got it simply because I read too many trick brain teasers.

I saw the name in the new teasers section and luckily glanced at the category before answering. I thought it was probability at first.

Posted by ursulanq on Nov 20, 2012

Nice one!! Of course me being me I said 25%. Aren't I amazing!!!

Posted by dangerouspie101 on Nov 23, 2012

Awesome, cg!

Posted by supernova12 on Nov 24, 2012

I love your teasers! They're all very creative and and perfect in every way!

Posted by Quocalimar on Nov 24, 2012

bwuuuuuuuuuuuh. I got it wrong and still don;t get it after reading the answer. That was extremely clever.

Posted by Viper on Nov 25, 2012

The correct answer is B.
The question is phrased "IF you choose to answer this question at random." 50%!

Posted by kitty-cat on Nov 28, 2012

But if the correct answer is B, then you DON'T have a 50% chance of getting it right. If the answer is 50%, then the answer is actually 25%, but then it would be 50, and it's an endless loop, a paradox.

Posted by christiangrl on Nov 28, 2012

Thank you kitty.

Posted by Thekid4 on Dec 05, 2012

Okay, I see the paradox, but why is the answer 0%? Shouldn't it be "there is no answer" or "paradox"? Either way, great teaser.

Posted by sarah12lizbeth on Dec 08, 2012

I thought that as well, Viper. 50%. Hmmm...

Posted by Obilio on Dec 11, 2012

cool I think, lol

Posted by sashomarine on Mar 22, 2013

That's really smart

Posted by JQPublic on Apr 19, 2013

Thanks, my brain really hurts now. Great teaser.

Posted by SaraGrace on Jul 31, 2013

I liked this one

Posted by kitykity1t on Aug 06, 2013

this just scrambled my brain and served it with toast.Wheat toast.

Posted by Babe on Jan 06, 2014

I have no idea. Thi9s must be a young person's riddle.


Posted by Babe on Jan 06, 2014

Oops! #9 does not belong in there. It just snuck in when I was not looking.

Posted by HABS2933 on Jan 06, 2014

Pretty easy, but enjoyed it.

Posted by FarFetched on Jan 06, 2014

The correct answer should be among the options for answering.

Posted by catmom on Jan 06, 2014

huh? need...more....coffee

Posted by dsjt on Jan 06, 2014

I chose to not answer this question at random.

Posted by jandjfrench on Jan 06, 2014

It seems that if I choose to answer the question at random and do answer the odds that I've correctly answered are 100% (sure thing). Just sayin'!

Posted by Zykezex on Jan 06, 2014

Isn't the odds of choosing A or D 33.333...% (one out of three) 25%, 50%, 60%?

Posted by Zykezex on Jan 06, 2014

I mean 33.333% choosing A or D and being correct...

Posted by spikethru4 on Jan 07, 2014

Zykezex: The probability of picking A or D is 2 out of 4, not 1 out of 3. Don't forget that "25%" is twice as likely as the other two options because it appears twice.

FarFetched: That's the trick. If the "correct answer" were an option, you'd still get a paradox, e.g.

What are the chances of picking the correct answer?
A) 25%
B) 50%
C) 60%
D) 25%
E) 0%

...but clearly you can pick E 20% of the time so it's no longer correct.

Posted by Zykezex on Jan 07, 2014

A thought: If I couldn't see the answers, A&D are 2/4. Having seen 25% twice, my choices narrowed to 1/3. (25%, 50% or 60%). The chances of being correct are still zero as 33.333% wasn't an answer for A or D.

Posted by spikethru4 on Jan 09, 2014

That's a fair comment, but the point is you're answering at random, so the choices are (A, B, C, D), not (25%, 50%, 60%).

Posted by ultimatecub on Nov 30, 2014

Wow...that's a great teaser! I love paradoxes

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