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Number Donuts (Posted on 2019-04-15) Difficulty: 2 of 5
Solve this logic number sequence puzzle

f(2202)=1
f(1999)=3
f(7351)=0
f(6666)=4
f(8080)=6
f(9068)=5
f(2386)=?

No Solution Yet Submitted by Danish Ahmed Khan    
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Solution Solution | Comment 2 of 4 |
The output is the number of "holes" or closed loops found in the input.  

0, 6, and 9 each have one; 8 has two.  Therefore f(2386) = 3. 

  Posted by tomarken on 2020-02-20 14:32:21
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