Common multiples of 2, 5, and 7 are numbers that are divisible by all three of these numbers. To find the common multiples, you can start by listing the multiples of each number: 2 (2, 4, 6, 8, 10, ...), 5 (5, 10, 15, 20, ...), and 7 (7, 14, 21, 28, ...). The common multiples of 2, 5, and 7 are numbers that appear in all three lists, such as 70, 140, 210, 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
60 and its multiples
lcm(2, 3, 5) = 30 → 2 digit common multiples are 30, 60, 90.
6 and7
20 pinkgal333:20, 40, 60 are all common multiples.
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
35
The common multiples of 2 and 5 are numbers that can be divided evenly by both 2 and 5. The common multiples of 2 and 5 are multiples of their least common multiple (LCM), which is 10. Therefore, the common multiples of 2 and 5 are all multiples of 10. Similarly, the common multiples of 2 and 6 are multiples of their LCM, which is 6. Therefore, the common multiples of 2 and 6 are all multiples of 6.
60 and its multiples
The Highest Common Factor is 1
lcm(2, 3, 5) = 30 → 2 digit common multiples are 30, 60, 90.
The first two common multiples of 235 is 5 and 47.
10 and 20
The LCM is: 420
10
10,20,30