Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)

Guest Message by DevFuse

BrainDrain

Member Since 10 Oct 2012
Offline Last Active Oct 17 2012 12:31 AM

Find content

Community Stats

Group Members
Active Posts 3
Profile Views 832
Member Title Newbie
Age Age Unknown
Birthday Birthday Unknown

Gender
Not Telling

0

Friends

BrainDrain hasn't added any friends yet.

Latest Visitors

janemoch1
25 Feb 2013 - 20:09
rookie1ja
30 Oct 2012 - 13:35
plainglazed
11 Oct 2012 - 16:14

Posts I've Made

In Topic: Think about these

12 October 2012 - 08:30 PM

"If the temperature this morning is 0 degrees and the Weather Channel says, "it will be twice as cold tomorrow", what will the temperature be?"

I know what you're thinking: The answer is 2 times 0 which is, of course, 0. And that would be a paradox. But the real answer lies in knowing what the temperature dropped to 0 from.

What was the temperature yesterday? If it was +20 degrees and went to 0 today, then the temperature dropped 20 degrees. Twice that is 40 degrees, meaning tomorrow's temperature will be -40 degrees.

Mathematically:

Let X represent yesterday's temperature. Let Y equal tomorrow's temperature.

X - X = 0
0 - 2X = Y

Nope, no paradox here. Just an incomplete formula. And it doesn't matter whether it's Celsius or Farenheit.

In Topic: Double Liar Paradox (Jourdain's paradox)

12 October 2012 - 12:46 AM

In order to truly make this a paradox, you would need to qualify at the beginning that both statements are either true or false.

If both statements are true, it's a paradox because they cannot both be true.

If both statements are false, it's a paradox because they cannot both be false.

There is no such qualifer to this "puzzle"; therefore, it's philosophy.

But it does provoke thought, doesn't it? That's what philosophy does.

In Topic: Crocodile Sophism

11 October 2012 - 12:19 AM

As a newbie to this site, perhaps I don't understand. This was under the category of "sophisms", which means a faulty or flawed argument. It's like a bad syllogism:

The **** crows.
The sun rises.
Therefore, the sun rises due to the ****'s crow.

Compare with:

If you answer correctly, I will return the child.
If you answer incorrectly, I will eat the child.
Therefore, I will (or will not) (return/eat) the child.

There's not really a riddle here, so there can be no answer. But it does make for some interesting discussion, doesn't it?