About Tier 2 - Relation
Requires a few ideas, quantities or steps to be connected.
Difficulty describes the challenge, not the solver. It is a Society guide rather than a formal academic level.
The tier is a Society guide to the amount of reasoning, technical work and insight a problem is expected to require. Your experience may vary depending on the topic and your background.
A Repeating Last Digit
Number Theory / Modular Cycles - 3-5 min
What is the final decimal digit of this power? You do not need to calculate the full number.
Assumptions
Use base-ten notation. The exponent is a positive integer, and only the final digit is requested.
More Options for A Repeating Last Digit
Collection question · Revision 1 · ID: power-last-digit