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MathNet 2026 — Part 06 Question 175

Math Olympiad Vault · MathNet 2026 — Part 06

Question 175

A game of coins is played as follows: You start with $1$ head and $1$ tail on a table. At each turn, you can perform any one of the following moves:


a. You can turn over all the coins on the table.


b. You can triple the numbers of heads and tails on the table.


c. If there are at least $4$ tails on the table, you can turn over $4$ tails.


d. If there are at least $5$ tails on the table, you can turn over $3$ of the tails and discard $2$ of the tails.

Knowing that at the end of a game you have $2024$ heads, what are the possible numbers of tails at the end of that game?