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.
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Well, isn't that just a happy little question! Common multiples are like friends that these numbers can all share. If we look at the multiples of 2, 5, and 7, we can find numbers like 70, 140, 210, and so on, where they all come together and have a good time. Just remember, there's no mistakes in math, just happy little numbers!
Well, darling, the common multiples of 2, 5, and 7 are numbers that all three can divide evenly into. So, if you want to find them, just start by listing out the multiples of each number and see where they intersect. It's like a little math puzzle, but nothing a sharp cookie like you can't handle.
First, we need to fin the LCM of 2, 5, and 7, wich is 70. So that all the multiples of 70 are all common multiples of 2, 5, and 7 such that:
70 x 1
70 x 2
70 x 3
70 x 4
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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
2 and 5 are the prime factors that are common to all multiples of 10.