The LCM of 3 and 15 is 15.
That's the least common multiple, or LCM.
The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers in the set. For sets of multiples, the LCM is the smallest number that is a multiple of all the numbers in the sets. The LCM can be calculated by finding the prime factorization of each number and then taking the highest power of each prime factor that appears in any of the numbers.
The common multiples of 18 and 27 are 54, 108, 162, 216, and so on. Each is a multiple of 54, which is the least common multiple of 18 and 27. There is an infinite number of common multiples for 18 and 27. 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).
There is an infinite number of common multiples for 6 and 8. A common multiple of any two numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
They are numbers that each of the two numbers can divide without remainder.
A common multiple is a number that two or more other numbers can both go into. For example, a common multiple of 2, 4, and 6 would be 12.Not sure what you mean by a "comman" multiple, but a commonmultiple of a set of numbers is a number that is a multiple of each number in the set. That is, it is in the multiplication table of each of the numbers in the set. Note, though, that for this purpose, the multiplication tables do not stop at 10 times or 12 times.All numbers have multiples. Some numbers have some of the same multiples as other numbers. These are known as common multiples.18 is a multiple of 6.18 is a multiple of 9.18 is a common multiple of 6 and 9.All numbers have multiples. Some numbers have the same multiples as other numbers. These are called "common multiples."12 is a multiple of 3.12 is a multiple of 4.12 is a common multiple of 3 and 4.
There is an infinite number of common multiples for 8 and 12. 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). However, the least or lowest common multiple of 8 and 12 is 24.
There is an infinite number of common multiples for 18 and 30 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). However, the least or lowest common multiple of 18 and 30 is 90.
There is an infinite number of common multiples for 5 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). However, the least or lowest common multiple of 5 and 7 is 35.
There is an infinite number of common multiples for 36 and 48. 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). However, the least or lowest common multiple of 36 and 48 is 144.
There is an infinite number of common multiples for 13 and 81. 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). However, the least or lowest common multiple of 13 and 81 is 1,053.
There is an infinite number of common multiples for 20 and 32. 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). However, the least or lowest common multiple of 20 and 32 is 160.