acebauer (acebauer) wrote,
acebauer
acebauer

A math problem for illustrators

I got this from here.  And to quote:  "This is a problem, which can be easily solved by children before entering elementary school. If you want to give it a try, please forget everything you have ever studied."

Here's the problem:

8809 = 6
7111 = 0
2172 = 0
6666 = 4
1111 = 0
3213 = 0
7662 = 2
9312 = 1
0000 = 4
2222 = 0
3333 = 0
5555 = 0
8193 = 3
8096 = 5
7777 = 0
9999 = 4
7756 = 1
6855 = 3
9881 = 5
5531 = 0

2581 = ?

I'll post the answer tomorrow.

Thank you Chad Orzel for the link.
 

   
Tags: art, puzzle, science
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