First multiples of 80 are 1 and 80
There are 10 multiples of 10 between 1 and 100: 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100.
80 of them.
They are all multiples of 1.
Multiples of 9 between 1 and 80 are 9, 18, 27, 36, 45, 54, 63, and 72.
There are 3,333 multiples of three that fall between 1 and 10,000.
14
One
12 of them.
19.
11 of them.
12 of them.