18, 27, 36, 45, 54, 63.
9
the common multiples between 1 and 100 for 9 and 10 are just 90!
11 of them.
2 multiples of 9, which is 18.
45, 54, 63.
45 and 54 are the multiples of 9 between 40 and 60
The difference is 1070 minus 684 = 386
There are 5 multiples of 9. There are 4 multiples of 12. There is 1 number that is a multiple of both, 36.
9
90. All numbers that are multiples of 3, 5 & 9 are multiples of their lowest common multiple lcm(3, 5, 9) = 45 → multiples of 45 between 49 and 95 is 2 x 45 = 90.
the common multiples between 1 and 100 for 9 and 10 are just 90!
110.
14 and 21
11 of them.
11
9 multiples
2 multiples of 9, which is 18.