Brain Teasers Optical Illusions Puzzle Hunts Codes & Ciphers Mechanical Puzzles
Personal Links
Browse Teasers
Search Teasers

What are the Odds?

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


Puzzle ID:#49666
Fun:*** (2.76)
Difficulty:** (1.86)
Submitted By:christiangrl*us*****




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%

What Next?


See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.



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.
Nov 20, 2012

Nice one!! Of course me being me I said 25%. Aren't I amazing!!!
Nov 23, 2012

Awesome, cg!
Nov 24, 2012

I love your teasers! They're all very creative and and perfect in every way!
Nov 24, 2012

bwuuuuuuuuuuuh. I got it wrong and still don;t get it after reading the answer. That was extremely clever.
Nov 25, 2012

The correct answer is B.
The question is phrased "IF you choose to answer this question at random." 50%!
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.
Nov 28, 2012

Thank you kitty.
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.
Dec 08, 2012

I thought that as well, Viper. 50%. Hmmm...
Dec 11, 2012

cool I think, lol
Mar 22, 2013

That's really smart
Apr 19, 2013

Thanks, my brain really hurts now. Great teaser.
Jul 31, 2013

I liked this one
Aug 06, 2013

this just scrambled my brain and served it with toast.Wheat toast.
Jan 06, 2014

I have no idea. Thi9s must be a young person's riddle.
Jan 06, 2014

Oops! #9 does not belong in there. It just snuck in when I was not looking.
Jan 06, 2014

Pretty easy, but enjoyed it.
Jan 06, 2014

The correct answer should be among the options for answering.
Jan 06, 2014

Jan 06, 2014

I chose to not answer this question at random.
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'!
Jan 06, 2014

Isn't the odds of choosing A or D 33.333...% (one out of three) 25%, 50%, 60%?
Jan 06, 2014

I mean 33.333% choosing A or D and being correct...
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.
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.
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%).
Nov 30, 2014

Wow...that's a great teaser! I love paradoxes
Jun 20, 2015

50% is the probability
Dec 11, 2016

On second thought, this belongs in the logic category.

Back to Top

Online Now
8 users and 608 guests

Users In Chat
Follow Braingle!
Fold 'N Fly Paper Airplanes
Easy to follow folding instructions and videos.
Copyright © 1999-2017 | FAQ | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise | Braingle Time: 11:06 pm
Sign In Create a free account