Предмет: Математика, автор: YBeReniy

На дошці записані числа 17 13 5 10 14 9 12 та 16. Які два числа можна витерти з цих чисел щоб середнє арифметичне записаних на дошці чисел не змінилося?

Ответы

Автор ответа: Iryn95
1

Ответ:

10 і 14

Пошаговое объяснение:

Сума 8 чисел дорівнює

17+13+5+10+14+9+12+16=96

Середнє арифметичне цих чисел дорівнює

96:8=12

Всього цифр 8, якщо приберемо 2 , то залишиться 6, тобто

6*12=72 , така повинна бути сума 6 чисел.

Отже два числа, які потрібно витерти, у сумі повинні дати

96-72=24

ці числа 10 і 14

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