Dr.Peterson
Elite Member
- Joined
- Nov 12, 2017
- Messages
- 16,059
i recently have seen someone using binomial theorem to expand 17^2017. how is that possible?
Can you quote what they did, or give a link to it? Why do you think it is not possible, if you have seen it done?
The first thing that comes to mind is that expanding (10 + 7)^2017 could be a justification of the rule for working mod 10 (namely, that all but the last term is a multiple of 10, and can be dropped). But you'll have to show me.