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.
41 - 9, D16
The numbers are -9-sq rt of 41 and -9+sq rt of 41
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.
There are 5 multiples of 9. There are 4 multiples of 12. There is 1 number that is a multiple of both, 36.
The first ten positive integer multiples of 41 are: 1 x 41 = 41 2 x 41 = 82 3 x 41 = 123 4 x 41 = 164 5 x 41 = 205 6 x 41 = 246 7 x 41 = 287 8 x 41 = 328 9 x 41 = 369 10 x 41 = 410
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.