Solve this logic number sequence puzzle by the correct digit
8080 = 6
1357 = 0
2022 = 1
1999 = 3
6666 = ?
Pick one:
A) 4
B) 2
C) 5
D) 7
E) 8
4   4   No Of circles in the number.
<result>A</result>
Solve this logic number sequence puzzle by the correct digit
8080 = 6
1357 = 0
2022 = 1
1999 = 3
6666 = ?