Problem
2024 AMC 10A Problem 10
Consider the following operation. Given a positive integer n, if n is a multiple of 3, then you replace n by \frac{n}{3}. If n is not a multiple of 3, then you replace n by n+10. For example, beginning with n=4, this procedure gives 4\to14\to24\to8\to18\to6\to2\to12\to\cdots. Suppose you start with n=100. What value results if you perform this operation exactly 100 times?
\textbf{(A) }10\qquad\textbf{(B) }20\qquad\textbf{(C) }30\qquad\textbf{(D) }40\qquad\textbf{(E) }50
Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.
Want to contribute problems and receive full credit? Click here to add your problem!
Please report any issues to us in our Discord server
Go to previous contest problem (SHIFT + Left Arrow) Go to next contest problem (SHIFT + Right Arrow)
Problem feedback
Difficulty
—