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.
The first 15 multiples of 107: 107, 214, 321, 428, 535, 642, 749, 856, 963, 1070, 1177, 1284, 1391, 1498, 1605 . . . ∞
45 and 54 are the multiples of 9 between 40 and 60
63 and 72 are the only two multiples of 9 between 60 and 80.
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!
11
110.
14 and 21
11 of them.
2 multiples of 9, which is 18.