The sixes you would pass would be in the numbers:
6
16
26
36
46
56
60
61
62
63
64
65
66 (two sixes)
67
68
69
76
86
96
This is a total of 20 sixes.
you would pass ten on the way.
20
10 would be the answer.
if u count from 1 to 100 u will pass up 19 sixes
19
20
20.
20.
20
11
20
Just the one.