What are the common multiples of 21 and 62?

Common multiples of 21 and 62 are numbers that both 21 and 62 can be divided into evenly with no remainder.

To find the common multiples of 21 and 62, we compare the list of multiples of 21 with the list of multiples of 62 to see what they have in common.

To create a list of multiples of 21, we multiply 21 by 1, 21 by 2, and so on like this:

21 x 1 = 21
21 x 2 = 42
21 x 3 = 63
21 x 4 = 84
...

Similarly, to create a list of multiples of 62, we multiply 62 by 1, 62 by 2, and so on like this:

62 x 1 = 62
62 x 2 = 124
62 x 3 = 186
62 x 4 = 248
...

When we compare the two lists to see what they have in common, we get the answer to "What are the common multiples of 21 and 62?"

1302, 2604, 3906, 5208, etc.

Since 1302 is the first number they have in common, 1302 is the least common multiple of 21 and 62.

Note: Our lists are shortened because they go on forever, but can you see the pattern when you look at the answer in green above? The common multiples are in intervals of 1302 (the least common multiple), so you can continue the green list above with more common multiples of 21 and 62 by simply adding 1302 to the last number on the list.

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What are the common multiples of 21 and 63?
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