510, 525.
The two common multiples of three and five are: 15 and 30 ^-^
15 and 30
There is an infinite number of common multiples for 5 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).
Since 3 and 5 are both prime numbers, the only common factor of the two numbers is 1. Perhaps you are thinking of common multiples, the first two common multiples of the two numbers are 15 and 30.
Multiples of 5 include 5, 10 and 15. For them to be common, they need to be compared to another set of multiples.
Multiples of 5 include 5, 10, 15 and 20. For them to be common, they need to be compared to another set of multiples.
Since the lowest common multiple of 3 and 5 is 15, the common multiples of 3 and 5 are the multiples of 15: 30, 45, 60, 75, 90, etc...
The LCM of 3 and 5 is 15. The multiples of 3 are , 6, 9, 12, 15, and so on. The multiples of 5 are 5, 10, 15, and so on. The LCM is 15.
Multiples of 5 include 5, 10, 15, 20 and so on. For them to be common, they need to be compared to another list of multiples.
The first two common multiples of 235 is 5 and 47.
5
15