21,42,64,86,108,130,152,174,196,218
They are 21, 42, 63, 84, 105, 126, 147, 168, 189, 210.
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For 3 its 3,6,9,12,15,18,21,24,27,30 For 5 its 5,10,15,20,25,30,35,40,45,50
-16
The first 10 multiples of 4 are: 4, 8, 12, 16, 20, 24, 28, 32, 36, and 40.
7, 14, 21, 28, 35
The first 10 multiples of 5 are: 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50.The first 10 multiples of 7 are: 7, 14, 21, 28, 35, 42, 49, 56, 63, and 70.