They are:
84*1
84*2
84*3
84*4
84*5
They are:
84*1
84*2
84*3
84*4
84*5
They are:
84*1
84*2
84*3
84*4
84*5
They are:
84*1
84*2
84*3
84*4
84*5
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The first 5 multiples of 21 are: 21, 42, 63, 84, and 105.
The lowest common multiple of 7 and 12 is 84. Therefore, the multiples of 7 and 12 are multiples of 84. The first five are: 84 168 252 336 420
21, 42, 63, 84
Multiples of 12 are 12, 24, 36, 48, 60, 72, 84... Multiples of 42 are 42, 84... Two common multiples of 12 and 42 are 84 and 168. The Least Common Multiple of 12 and 42 is 84.
The first 5 multiples of 1 are: 1, 2, 3, 4, and 5.