| ანა | თარიღი: ხუთშაბათი, 2008-10-02, 5:11 PM | შეტყობინება # 1 |
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| 1. A while ago in a laboratory in an african country, a dangerous bacteria named "Ishangololo" was made by an accident. After maturity, this bacteria splits into two bacterias like itself. The age of maturity might not be the same in all bacterias. We say that the bacteria A is a child of the bacteria B if A has came into existence by the division of the bacteria B of by the division of one of B's children. Right now, we have 3k bacterias in the lab. Prove that there is a bacteria whose number of children among the current bacterias is a number greater or equal than k and smaller or equal than 2k.
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