9, 18 27 36 45 54 63 72 81 90
10. They are the first ten multiples of 9.
9 18 = 9 27 =9 36 = 9 etc
There are infinitely many multiples of 9 and it is not possible to add them all.
The first 5 common multiples are the first 5 multiples of their lowest common multiple (LCM) LCM(9, 10) = 90 → first 5 common multiples are 90, 180, 270, 360, 450.
Well, isn't that a happy little question! To find the sum of the first 6 multiples of 9, you simply add them all together. So, 9 + 18 + 27 + 36 + 45 + 54 equals 189. Just like painting a beautiful landscape, math can be a peaceful and rewarding experience.
.....5 .....Σ 9r ...r=1
There can only be one greatest and the greatest common multiple of 9 and 10 is infinite. The first 5 common multiples of 9 and 10 are 90, 180, 270, 360 and 450.
Common multiples of 9 and 10 are all of the multiples of 90.
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
The first 5 multiples of 5 are: 5, 10, 15, 20, 25 The first 5 multiples of 9 are: 9, 18, 27, 36, 45 The first 5 multiples of both 5 and 9 are: 45, 90, 135, 180, 225
The first 10 multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30.
They are 90, 180, 270, 360, and 450.