21
A number that is divisible by both 3 and 7 must be a multiple of their least common multiple, which is 21. Therefore, any number that is a multiple of 21 will be divisible by both 3 and 7. Examples of such numbers include 21, 42, 63, 84, and so on.
Any multiple of 21.
The Least Common Multiple (LCM) of (15, 21 and 27) is 945.
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
3 = (3)*15 + (-2)*21
If it needs to be natural it is one.
The least common multiple is the smallest positive number that is the multiple of two or more numbers. 3: 3, 6, 9, 12, 15, 18, 21 21: 21 The LCM of 3 and 21 is 21.
21
A number that is divisible by both 3 and 7 must be a multiple of their least common multiple, which is 21. Therefore, any number that is a multiple of 21 will be divisible by both 3 and 7. Examples of such numbers include 21, 42, 63, 84, and so on.
The least common multiple (LCM) is often also called the lowest common multiple or smallest common multiple. Keep in mind that these different terms all refer to the same thing: the smallest positive integer which is a multiple of two or more numbers.The least common multiple of 5, 15, and 21 is 105.
Because 21 is a multiple of 1, 3, 7 and 21.
Any multiple of 21
Any multiple of 21.
21
Forty-two.
The number 9 is the smallest, but there are an infinite number of answers to the question. 15, 21, 27, 33, 39, and 45 are some more.