Linked Questions
27 questions linked to/from Twelve balls and a scale
23
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3
answers
1.4m
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Brooklyn 99 riddle: Weighing Islanders [duplicate]
This one comes from this week's Brooklyn Nine-Nine episode!
There is an island with 12 islanders. All of the islanders individually weigh exactly the same amount, except for one, who either weighs ...
- 341
6
votes
2
answers
191k
views
Brooklyn Nine-Nine Riddle: Weighing Islanders [duplicate]
A brain teaser posed by the character Captain Ray Holt of 'Brooklyn Nine-Nine' played by Andre Braugher during episode 18 of season 2:
"There are twelve(12) men on an island, eleven(11) weigh ...
-1
votes
1
answer
24k
views
The 12 islander question [duplicate]
There is an island with 12 islanders. All of the islanders individually weigh exactly the same amount, except for one (either weigh more, or less than the other 11). How can you find which islander is ...
- 21
0
votes
1
answer
3k
views
Brooklyn nine nine 12 man riddle island [duplicate]
Surely the question is of two men on a see saw at a time as is conventional rather than a makeshift pivot scale making the question much harder as it is 12 men 11 of which are equal weight and one is ...
-2
votes
2
answers
423
views
Shortest number of attempts to solve this issue [duplicate]
There are 9 identical balls but only one of them has a higher weight. You are also given a weight balance. How many attempts would you require to identify the ball with the extra weight and how?
- 31
0
votes
4
answers
201
views
How many ways to iterate? [duplicate]
There are 9 coins, out of which one is odd, i.e. its weight is either less or more than that of the other 8 coins. How many iterations of weighing using a pan balance are required to find the odd coin ...
- 125
-2
votes
1
answer
183
views
This weighs heavily on my mind [duplicate]
I have 9 coins that look identical, but one is heavier than the others. I want to identify that one.
My brother has an old-fashioned balance scale that I can use, but I'll have to do annoying chores ...
- 466
0
votes
0
answers
85
views
Analytical puzzle [duplicate]
You have twelve coins. You know that one is fake. The only thing that distinguishes the fake coin from the real coins is that its weight is imperceptibly different. You have a perfectly balanced scale....
- 109
1
vote
0
answers
75
views
Island Riddle. - How would you approach this and what is your mentality? [duplicate]
There are 12 people on an island. 11 of the 12 people weigh the exact same. However one of them weighs different(more or less you don't know). You have a seesaw. You can only use the seesaw 3 times. ...
- 69
25
votes
4
answers
9k
views
How do you solve a word puzzle when you have no idea where to start?
When you're looking at a logical word puzzle, what sorts of clues should you try to look for to solve them? There have been quite a few puzzles posted to this site so far that I spent a few minutes ...
- 2,373
16
votes
4
answers
1k
views
Fifty-two genuine and two fake coins
In the country Borgonia, there are only two types of coins: genuine ones and fake ones.
All genuine coins have the same weight, and all fake coins have the same weight.
The weight of a genuine coin is ...
- 45.3k
7
votes
11
answers
4k
views
121 coins and a balance
Inspired by this puzzle...
You have $121$ apparently identical gold coins. At most one of these is fake, and weighs a different amount than a genuine coin.
In front of you is balance with two pans. ...
- 32k
13
votes
6
answers
881
views
Lots of Gold Stacks and a Balance Scale
You are given X amount of stacks of golden coins, each stack consisting of ten (10) golden coins and a digital balance scale with perfect precision that shows how much difference between weights you ...
- 30.2k
10
votes
7
answers
4k
views
Fewest possible weighings to determine which ball is heavier/lighter
You are given 4 balls, all equal in weight except for one that is either heavier or lighter. You are also given a two-pan balance to use. In each use of the balance you may put any number of the 4 ...
- 209
9
votes
5
answers
472
views
Breaking Balance (Part A)
If we assume the classic balance puzzle (Twelve balls and a scale) is phrased like this:
You have 12 coins that are identical except for one counterfeit that is heavier or lighter. Can you use a ...
- 3,783