Doors
These brain teasers rely on your ability to recognize groups of common attributes. For each of these puzzles you'll need to figure out why the words or letters are grouped as they are. Sometimes you will be asked to pick the oddoneout or to place a new word into the correct group.
Captain Jonathan Frakes is leading his crew on a long, exhausting journey through the treasure vaults of the late Doug the Despot, who amassed fabulous wealth and hid it away in catacombs beneath the Capital City of Earth. Unfortunately for treasure hunters, Doug also laid several nasty booby traps along the way in the form of puzzles. One of these puzzles is five numbered doors. There is an inscription above them.
"One of us right; four of us wrong.
Four are alike; one doesn't belong."
The doors are numbered:
1, 2, 3, 4, 5
Which door should Captain Frakes choose?
HintThink about the Golden Ratio.
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Answer
Door #4 does not belong.
It is the only number not in the Fibonacci Sequence: 0, 1, 1, 2, 3, 5, 8..., where every number is the sum of the two previous numbers.
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Comments
tinypenguin
Jan 11, 2011
 Haha I was thinking way too literally before I saw the hint. I just read a book on the Golden Ratio this summer, so that was the clincher 
braingle100
Jan 13, 2011
 Um, how are the treasure hunters supposed to know about the Golden Ratio and the Sequence? 
braingle100
Jan 13, 2011
 Um, how are the treasure hunters supposed to know about the Golden Ratio and the Sequence? 
bookworm91
Jan 13, 2011
 @braingle100: They are brilliant, logical people who have done their research on math and nature. Plus they have all you Brainglers to help them figure it out. And Captain Frakes has a communication device with a builtin Google. And did I mention they are brilliant? 
TheDecipher
Jan 24, 2011
 oh i never thought to use that technique truly teasing teaser 
Qball479
Feb 18, 2011
 It is also the only nonprime number. 
bookworm91
Feb 18, 2011
 1 is technically also a nonprime number, as a prime number has 2 factors (1 and itself), but 1 is unique in that it only has 1 factor.
But that's why I used the Golden Ratio hint, to cancel that possibility out 
rob77
Mar 13, 2011
 I'd say the answer is #1. "One of us right" could be interpreted as the number 1 is the correct one. Then "Four are alike; one doesn't belong" could mean the numbers 24 are alike in not being the right one, and the number 1 wouldn't belong because it IS the right one. 
bookworm91
Mar 14, 2011
 An interesting interpretation  I hadn't thought of that one.
Thanks for the comments, everybody, by the way 
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