3+6+9...+45taking 3 common3(1+2+...+15) = 360
The first three multiples of 3 are 3, 6, 9 The first three multiples of 9 are 9, 18, 27 As the lowest common multiples of 3 and 9 is 9, the common multiples of 3 and 9 are the multiples of 9, thus: The first three common multiples of 3 and 9 are 9, 18, 27
The multiples of 6 is 6,12,18,24,30,36,42,48,54,60,66,72,78,84,90.................. The multiples of 9 is 9,18,27,36,45,54,63,72,81,90,99,108,117,126,135...............
3 + 6 + 9 + ... + 18000 = 3(1 + 2 + ... + 6000) = 3 × ½ × 6000 × (6000 + 1) = 54,009,000
3, 6, 9 9, 18, 27
9 18 = 9 27 =9 36 = 9 etc
the first 6 multiples of 9 are 9 , 18 , 27 , 36 , 45 , 54
3+6+9...+45taking 3 common3(1+2+...+15) = 360
The common multiples of 6 and 9 are the infinite set of multiples of their LCM, which is 18. So the common multiples of 6 and 9 are 18, 36, 54, 72, 90, 108, 126, 144, 162, 180, and so on.
All multiples of 12 are also multiples of 6 and they all can be written as the sum of nine numbers.
The first three multiples of 3 are 3, 6, 9 The first three multiples of 9 are 9, 18, 27 As the lowest common multiples of 3 and 9 is 9, the common multiples of 3 and 9 are the multiples of 9, thus: The first three common multiples of 3 and 9 are 9, 18, 27
The first 5 multiples of 3 are as follows: 3, 6, 9, 12, 15
There are infinitely many multiples of 9 and it is not possible to add them all.
The multiples of 6 is 6,12,18,24,30,36,42,48,54,60,66,72,78,84,90.................. The multiples of 9 is 9,18,27,36,45,54,63,72,81,90,99,108,117,126,135...............
3 + 6 + 9 + ... + 18000 = 3(1 + 2 + ... + 6000) = 3 × ½ × 6000 × (6000 + 1) = 54,009,000
3, 6, 9.
The first six multiples of 3 are 3, 6, 9, 12, 15, and 18.