## 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

# plasmid

Member Since --
Offline Last Active Today, 05:41 PM

### In Topic: I'm not Jonah

19 December 2014 - 07:37 AM

Spoiler for I guess

Certainly an interesting take on it... I had to look that up to see what you were talking about, which of course means it wasn't what I had in mind.

I think I ought to go ahead and say what this one's about.
Spoiler for

### In Topic: Empty a peg and marry a Princess (difficult)

13 December 2014 - 09:05 PM

Spoiler for another possibly useful finding, but not a solution yet

### In Topic: Taking q to the limit

11 December 2014 - 04:08 PM

### In Topic: Taking q to the limit

11 December 2014 - 04:56 AM

I think I'm mis-translating from Math to English. In my mind, this says:

Find a and b such that there is no real x for which
a < q < b if and only if q = x3 + 1/x3, for all values of q

But the thing on the left of the "if and only if" is true for an open range of values of q while the thing on the right of the "if and only if" is true for exactly one value of q (except when x=0). So the "if and only if" can never be satisfied.

Do you have a different interpretation of the OP in mind?

### In Topic: I'm not Jonah

10 December 2014 - 06:45 AM

Not any of those. The answer should have features that make it reasonably obvious that the clues are describing that answer; from the mother and father thing, to the flattened face and churning stomach (of the subject of the riddle and not the imbiber), to the "failing brain", to the clue about poison that's released only when threatened.