90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 990, 1080, ..
60, 72, 84.
12
90 has an infinite number of multiples.
Common multiples of 9 and 10 are all of the multiples of 90.
These are the first 90 multiples of 7:714212835424956637077849198105112119126133140147154161168175182189196203210217224231238245152159266273280287294301308315322329336343350357364371378385392399406413420427434441448455462469476483490497504511518525532539546553560567574581588595602609616623630
6+12+18+24+30=90
45, 90, 135. 6, 12, 18.
Multiples of 90.
To find the common multiples of 54 and 90, first list the multiples of each number. The multiples of 54 are 54, 108, 162, 216, etc. The multiples of 90 are 90, 180, 270, 360, etc. The common multiples of 54 and 90 are numbers that appear in both lists, such as 180 and 360.
The multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, and so on. The multiples of 15 are 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, and so on.
Multiples of 90
Yes it is. 3x30=90