Предмет: Математика, автор: mihmm2005

В стране Цифра есть 9 городов с названиями 1; 2; 3; 4; 5; 6; 7; 8; 9. Путешествиник обнаружил, что два города соединены авиалинией в том и только в том случае, если двузначное число, составленное из цифр-названий этих городов, делится на 3. Можно ли добраться из города 1 в город 9?

Ответы

Автор ответа: polinka4541

нет нельзя(девять делится на три а один на три не делится)

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