105
Two common multiples of 21 and 15 are 105 and 315.
There are an infinite number of common multiples of 21 and 15 .The smallest two of them are 105 and 210 . A couple of others are 1,890 and 453,705 .
The LCM of 15 and 21 is 105.The Least Common Multiple (LCM) for 15 21 is 105.
105 and 210 are.
105, 210
315
105 and 210
There is an infinite number of common multiples for 21 and 15. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
LCM of 21 & 49 is 147, so all multiples of 147 are common multiples of 21 & 49.
Multiples of 15 include 15, 30 and 45. For them to be common, they need to be compared to another set of multiples.
there are infinite amount of common multiples.
The common multiples of 9 and 21 are 63, 126, 189 and so on.