Question #ec46a

1 Answer
Oct 12, 2017

1350, 2700, 4050, 5400, 6750, 8100, and 9450

Explanation:

3*5*9*10=1350
Any multiple of this value also works as long as they are 4 digits.
1350*2=2700
1350*3=4050
1350*4=5400
6750, 8100, and 9450 are the other ones.