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1500 questions
34
votes
9 answers
Bury me alive, and I won’t die. Who am I?
Slice me in half, I’ll have a twin.
I’ll mix things up, using my skin.
Bury me alive, and I won’t die.
I know when it’s light, but have no eyes.
Who am I?
Smart
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34
votes
1 answer
The Data So Far
Part of the Fortnightly Topic Challenge #35: Restricted Title 1
If you've been following this xkcd series of puzzles, you know that 11 of the 13 subpuzzles have been solved so far.
Consecutive Vowels
Chess Enlightenment
Island (sketch)
Labyrinth…
stacksfiller
- 10,545
- 3
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34
votes
1 answer
Why Alexa Shouldn't Teach Non-Native English Speakers About Idioms
They cost ≈ $0.00833333333333333333333333333333 each.
(9) -_----_-_-----
Go! Intentionally fracture your fibula!
(8) -----_-_---
You are the joints of the lower appendages of a eusocial animal.
(4) --- --_---_--- -_-----*
I bequeath…
Chowzen
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34
votes
5 answers
Consecutive Vowels
Part of the Fortnightly Topic Challenge #35: Restricted Title 1
Potentially NSFW: Consecutive Vowels
Being a native speaker (6)
_____ goin' nowhere! (3 4)
Democratic Debbie (7)
Major airplane manufacturer (6)
Like the people in the linked comic…
stacksfiller
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34
votes
1 answer
Who was the US president in [oh rubbish, I forgot the year]?
I've been trying to remember who was the US president in the yea-
Oh...
Oh god, which year was it again?
Anyway, I wrote down a note to myself while I was sleepy last night. If anybody can help me find the answer I'd really appreciate it.
Just so I…
user41531
34
votes
8 answers
Monty Hall Revisited: Winning Both Goats!
Suppose you're at a game show, knowing the winning strategy for the classic Monty Hall problem. Your turn comes up and you take the stage. You confidently choose door number (?).
Just as you are getting ready to tell the host you want to switch…
Tim
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34
votes
2 answers
You must be THIS high to ride this puzzle!
1.
2.
3.
4.
5.
6.
7.
8.
What is this?
Chowzen
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34
votes
2 answers
Friend passed me this note after lecture
After my linear algebra lecture ended at 3:30 today, my friend passed me this note, but it seems to be encrypted in some way that I don't understand. What question is my friend asking, and what is the answer?
Feedback is appreciated, and I will add…
Riley
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34
votes
1 answer
Integers around a circle with consecutive pairs adding to a square
The integers 1 to 50 are placed around a circle in such a way that the sum of any two of them which are adjacent is a perfect square. Of these integers, the even numbers are then removed. Restore them.
Bernardo Recamán Santos
- 18,674
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34
votes
3 answers
I live in a quadruple, yet prefer to be a twin - who am I?
I live in a quadruple,
Yet prefer to be a twin.
All I can do is move up and down,
and left and right.
You can make me jump,
but only once.
I will watch my sides,
If you will watch my corners right.
Who am I?
prog_SAHIL
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34
votes
11 answers
Coin weighing with a single weighing device
You have 12 coins which each weigh either 20 grams or 10 grams. Each is labelled from 1 to 12 so you can tell the coins apart. You have one weighing device as well. At each turn you can put as many coins as you like on the weighing device and it…
Simd
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34
votes
8 answers
Dinosaur egg drop
Archeologists discover two dinosaur eggs, and you are given the chance to test the durability of these eggs (bad move on their part). Suppose that these eggs will absorb a specific amount of force with no cumulative damage. In other words, if they…
Neil
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34
votes
9 answers
How did he count my money so fast?
When I was in college, each semester there were companies that would buy back your used textbooks. One semester I brought my books to the book-buyer, who said "We'll pay you $41". He grabbed a thick stack of one-dollar bills and, with the thumb of…
BrettFromLA
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34
votes
2 answers
Question 16 Ripple Effect
This is a Ripple Effect puzzle. The rules of this puzzle are:
Fill in each region with numbers from 1 to n, where n is the region size. For instance, the top left region must have the numbers 1 to 5 in some order.
No two of the same number x can be…
Deusovi
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34
votes
5 answers
Simple geometry. Or is it?
I've got a regular tetrahedron and a square pyramid. Every edge of the two solids has the same length. If I perfectly attach one face of the tetrahedron to one of the triangular faces of the square pyramid (I.E. every point of one face overlaps a…
Marco Bonelli
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