Addendum: For Statement (1), the "world of possible n's" also includes three-digit numbers (e.g. 462), four-digit numbers (e.g. 7,365), five-digit numbers (e.g. 10,960), etc. But the realization is still that in all cases, the only way to get a hundreds digit of 10n that's 6, the tens digit of n must be 6. SUFFICIENT.
Addendum: For Statement (1), the "world of possible n's" also includes three-digit numbers (e.g. 462), four-digit numbers (e.g. 7,365), five-digit numbers (e.g. 10,960), etc. But the realization is still that in all cases, the only way to get a hundreds digit of 10n that's 6, the tens digit of n must be 6. SUFFICIENT.
This was great! I would love to see more hard EA questions :) Thank you for your great content and for your detailed explanations.
My pleasure. Glad you found it helpful!
This was a very unique question. Thank you for sharing it to challenge my reasoning
My pleasure. Glad it stretched your abilities!