2021 Fall AMC 10A Problems/Problem 12
Revision as of 20:26, 22 November 2021 by MRENTHUSIASM (talk | contribs) (Corrected the sign error, and reformatted. Made Sol 1 more concise.)
Contents
Problem
The base-nine representation of the number is What is the remainder when is divided by
Solution 1
Recall that We have -Aidensharp ~MRENTHUSIASM
Solution 2
We convert this into base so Notice that Simplifying, So, the answer is
-kante314
See Also
2021 Fall AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 11 |
Followed by Problem 13 | |
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All AMC 10 Problems and Solutions |
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