The sixes you will encounter are within the following numbers:
6, 16, 26, 36, 46, 56, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 76, 86, 96
Therefore, there are 20 sixes in total between the numbers 1 and 100.
if u count from 1 to 100 u will pass up 19 sixes
20
19
20
20.
20.
11
Just the one.
20
20
you would pass ten on the way.
10