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Skupina piatich detí si nabrala cukríky z vedierka. Arnold mal o 7 cukríkov viac než Beáta a ona mala o 6 menej než Klaudia. Edo mal o 3 viac než Dávid a Klaudia mala o jeden viac než Edo. Beáta a…
Vypočítajte aký objem roztoku možno pripraviť z 0, 31 mol kyseliny dusičnej ak koncentrácia kyseliny v tomto roztoku je 2, 6 mol/dm3.
Prichádzajúce pakety môžu byť troch rôznych typov: A, B, C. Predpokladajme, že prišlo 10 paketov a z toho sú 2 typu A, 5 typu B a 3 typu C. V akých rôznych poradiach mohlo prísť týchto 10 paketov …
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