There are infinitely many of them so they cannot be listed. One of their multiples is 294*252*210 = 15558480.
The GCF of 210, 252, and 294 is 42
42, 84, 126, 168, 210, 252, 294, 336, 378, . . .
42, 84, 126, 168, 210, 252, 294, 336, 378, . . .
A: 42 84 126 168 210 252 294 336 378 420
42, 84, 126, 168, 210, 252, 294, 336, 378, 420
42, 84, 126, 168, 210, 252, 294, 336, 378, 420
42, 84, 126, 168, 210, 252, 294, 336, 378, 420, 462, . . .
42, 84, 126, 168, 210, 252, 294, 336, 378, 420, 462, 504, . . .
42, 84, 126, 168, 210, 252, 294, 336, 378, 420, 462, 504, . . .
The multiples of 42 are: 42, 84, 126, 168, 210, 252, 294, 336, 378, 420, and so on. A number is a multiple of 42 if it is evenly divisible by 42.
42 84 126 168 210 252 294 336 378 420 462 504 546 588 630
42, 84, 126, 168, 210, 252, 294, 336, 378, 420 and just keep adding 42 until you get to infinity.