There are infinitely many common multiples of 3, 5 and 7, each one 105 larger than the previous one. Or to put it another way: the common multiples of 3, 5 and 7 are the multiples of their lowest common multiple which is 105. ie their common multiples are all the multiples of 105, of which there is no end - there is an infinite number of multiples of 105 (or any other number [except zero]).
35,70,105.140
35..
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
Common multiples of 7 and 5 include 35, 70, 140, etc.
There are infinitely many common multiples of 3, 5 and 7, each one 105 larger than the previous one. Or to put it another way: the common multiples of 3, 5 and 7 are the multiples of their lowest common multiple which is 105. ie their common multiples are all the multiples of 105, of which there is no end - there is an infinite number of multiples of 105 (or any other number [except zero]).
There is an infinite number of common multiples for these numbers!
35 and 70 both have 7 and 5 as prime factors
Since 14 is a multiple of 7, all of its multiples are common.
35,70,105.140
35
35..
35
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
42 is the LCM of 3, 6 and 7. All multiples of 42 are multiples of 3, 6 and 7