Logic Sequence Puzzle
Logic
Level
2
Solve this logic number sequence puzzle by the correct digit
8080 = 6
1357 = 0
2022 = 1
1999 = 3
6666 = ?
The answer is 4.
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count the number of holes in left side number and write it on right side. For example 8 has two holes and 0 has one hole so 8080 has total 6 holes.