1. n-1 is a multiple of 3.

2. n^2-1 is a multiple of 8.

3. n^3-1 is a multiple of 10.

If you arrange this list in an ascending order, what number will be in the 55th place?

I considered, but decided not to include  N=1 on my list.  Hence 1621 was 54th of my list.  Of course the left hand sides would all be zero, in that case, and hence divisible by anything.