3, 6, 9 and so on.
5, 10, 15 and so on.
7, 14, 21 and so on.
Common multiples include, 105, 210, 315 and so on.
Since all 3 are prime numbers LCM = 3 * 5 * 7 = 105 All multiples of 105 are multiples of 3, 5 and 7
42,84,126
420
The Highest Common Factor is 1
There is an infinite number of common multiples for 3 and 7. 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).
3,6,9,12,15,18,21,24,27,30,33,36,39,42are multiples of 3 5,10,15,20,25,30,35,40,45,50,55,60,65,are multiples of 5
21
Their product.
210
There are an infinite number of multiples of 3. Five examples may include 3, 6, 9, 12, and 15.
2, 3 and 5 go into multiples of 30.
42