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Results tagged with mathematics
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user 55735
A puzzle related to mathematical facts and objects, whose solution needs mathematical arguments. General mathematics questions are off-topic but can be asked on Mathematics Stack Exchange.
18
votes
2
answers
2k
views
Diet Coke or water?
At PuzzlingCorp, all employees have a break at 10:00am sharp every day, and immediately proceed to get either plain water or a diet coke.
The people at PuzzlingCorp are also highly susceptible to pee …
25
votes
2
answers
748
views
The mysterious operation $\oplus$
We are given an operation $\oplus$ that is associative and commutative, has $0$ as a neutral element, and we know:
$1/10 \oplus 1/6 = 5/29$
$1/6 \oplus 2/3 = 7/10 $
$1/5 \oplus 2/5 = 3/7 $
$1/4 \op …