Puzzle: Equations - Find the missing number

Update: Wed 17 Apr 2019 11:46:52 PM CEST

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Here is an interesting puzzle with several numbers and equations. It can be solved by everyone, even small children.

It is said that this problem can be solved by young children in five to ten minutes, by programmers and mathematicians in an hour and by people with higher education... well, check it yourself!

Have fun on this puzzle!

7890 = 4       3664 = 3
3700 = 2       3678 = 3
1111 = 0       0000 = 4
5890 = 4       1111 = 0
2630 = 2       1890 = 4
3859 = 3       7801 = 3
1462 = 2       8880 = 7
8444 = 5       2580 = ???

 

 

Do you like this puzzle? Were you able to solve the equation? Too hard or too easy? Please write a comment...

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