Предмет: Математика, автор: VanyaG666

1. На колі позначено 5 червоних і 7 синіх точок. Розглянемо всі відрізки
(хорди) з кінцями в позначених точках. У скількох відрізків кінці:
а) різного кольору;
б) однакового кольору?

Ответы

Автор ответа: julia28071995

Ответ:різного 35

Однакового 31

Пошаговое объяснение:

Синіх відрізків 21

Червоних 10

однакового буде 31

Різних 5*7=35

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