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MathNet 2002 — Part 01 Question 27

Math Olympiad Vault · MathNet 2002 — Part 01

Question 27

The integers from $1$ to $2002$, inclusive, are written on a board in increasing order $1$, $2$, $\ldots$, $2001$, $2002$. Then, those that occupy the first place, fourth place, seventh place, etc. are deleted, that is, those that occupy the places of the form $3k+1$.
In the new list, the numbers that are in the places of the form $3k+1$ are deleted. This process is repeated until all numbers are deleted from the list. What was the last number that was deleted?