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Found problems: 1

2020 Kosovo National Mathematical Olympiad, 1
Tags: combinatorics , sequence , terms , algebra
Some positive integers, sum of which is $23$, are written in sequential form. Neither one of the terms nor the sum of some consecutive terms in the sequence is equal to $3$. [b]a) [/b]Is it possible that the sequence contains exactly $11$ terms? [b]b)[/b]Is it possible that the sequence contains exactly $12$ terms?