Counting numbers

1235 = 0
2678 = 3
3668 = 4
9000 = 4
8000 = 5
3218 = 2
6777 = 1
8888 = 8
1568 = ?

Scroll down for the answer!

 

 

Answer

The solution: count the number of enclosed spaces within each digit.

1, 2, 3, 5, and 7 have no enclosed spaces

6, 9 and 0 have one enclosed space

8 has two.

4 has 1 or 0 depending on what font you are reading this in, so we left this digit out.