Multiples of the numbers 12 and 28 are 84, 168, 252, 336, 420, 504, 588, 672, 756 and 840.
12, 24, 36, 48, 60, 72, 84, 96, 108, . . . 35, 70, 105, 140, 175, 210, 245, 280, 315, . . .
For all natural numbers ( the counting numbers, 1,2,3,4, are natural numbers), 840 times each of those is a multiple of 840. We say let k be the natural numbers 1,2,3... where ... means it goes on forever. So we have 840k are all the multiples Here is a list of a few. 840 x 1 = 840 840 x 2 = 1680 840 x 3 = 2520 840 x 4 = 3360 we continue with 840x5, 840x6, etc.
The total number of integers that are multiples of both 42 and 56 is infinite. Here are the first few: 168, 336, 504, 672, 840 . . .
Here are some multiples of both 15 and 7: 105, 210, 315, 420, 525, 630, 735, 840, 945.
All multiples of 840 are common multiples of 60 and 280
840
They are: 3*5*7*8 = 840, except they are factors.
840
Any multiple of 42000
840, 1680, 2520 and so on.
210, 420, 630, 840 . . .
840, 1680, 2520
No. The two closest multiples of seven are 833 and 840.
420, 840, 1260 and so on.
280, 560, 840
420, 840, 1260, 1680, 2100, 2520, 2940 +420 . . .