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Koľko je možných navzájom rôznych tuctov?
A ako sme prišli k odpovedi na otázku, čo donesie poslíček, keď objednáme polevy "15"?
Ďakujem za odpoveď
V titračnej banke máme presne 10 cm³ roztoku CSOH. Na jeho neutralizáci potrebujeme 25 cm³ kyseliny sírovej s koncentráciou 0,30 mol.dm. Aká je koncentrácia CSOH v roztoku a koľko CSOH obsahuje jeho…
28 cestujúcich postupne vystúpilo na staniciach A,B,C,D,E. Zo stanice E už vlak odchádzal prázdny. Koľkými spôsobmi sa to mohlo udiať? Je správna odpoveď 28⁵ alebo 5^28? Ďakujem za pomoc
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