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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.
11
votes
One number placed in 3 places makes these equations correct
The number is
And as an extra challenge, I've placed it in exactly the same location for each equation!
9
votes
1
answer
629
views
Locked Door Number Puzzle
I'm supposed to make a delivery to a crazed botanist. In case you're curious, the shipping manifest is:
Name: Canoga
Weight: 9,723 g
Ref #: 7943
Store Code: 6979
Price: 1,225 won
Name: Khenaizi
We …