Vrijeme: 02:07

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Ako imamo 121 učenika koliko izbornih predmeta maksimalno smijemo ponuditi, a da pri tome možemo garantirati da će barem 21 odabrati isti predmet.
If we have 121 students, how many optional subjects can we offer as a maximum, while at the same time we can guarantee that at least 21 will choose the same subject.