if you mean 6, 26,36... then 10. If you mean multiplies of 6 then 16
If you count from 1 to 100 you pass 11 6's along the way: 6, 16, 26, 36, 46, 56, 66, 76, 86, and 96.
if u count from 1 to 100 u will pass up 19 sixes
20
20.
20.
20
19
11
Just the one.
20
20
you would pass ten on the way.