20
You'll get:
06
16
26
36
46
56
60
61
62
63
64
65
66 (counts as 2)
67
68
69
76
86
96
if u count from 1 to 100 u will pass up 19 sixes
20
19
20.
20
11
20
19
10
you would pass ten on the way.
10 would be the answer.
You have to find out how many 6s go into 100 evenly so 100/6=16 with a remainder of 4 so you will pass by 16 6s