90
Multiples of 18: {18, 36, 54, 72, 90...}Multiples of 30: {30, 60, 90, 120, 150...}Therefore the LCM is 90.
All multiples of 90.
18, 36, 54, 72, and 90 = the first five multiples of 18
At 90.
Multiply 18 by a series of numbers. Therefore, multiples of 18 are, as follows: 18, 36, 54, 72, 90, 108...
18, 36, 54, 72, 90.
1/9
The LCM of 15 (which is 3*5) and 18 (which is 2*3^2) is 90 (which is 2*3^2*5).
Multiples of 9 up to 100 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99. Multiples of 10 up to 100 are 10, 20, 30, 40, 50, 60, 70, 80. 90, 100. The only common multiple up to 100 of 9 and 10 is 90.
18 has an infinite number of multiples. They start with 18 and go on forever by continuously adding 18: 18, 36, 54, 72, 90, 108 +18 . . .
18, 36, 54, 72, 90 . . .