This problem can be solved by preschool children in 5-10 minutes, by programmers in 1 hour, by people with a higher education... well see for yourself!
8809=6
7111=0
2172=0
6666=4
1111=0
3213=0
7662=2
9313=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 later but post your answers in the comment box below!
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2 - Count the circles in each series of numbers, durp.
