Предмет: Математика, автор: kanatdarmenovk

1+2+3+4+...+57+58+59
решите с быстрым и эффективным способом​

Ответы

Автор ответа: Lilycreativity
1

Ответ:174

Пошаговое объяснение:все числа в ответе получаются 60. 1+59=60 2+58=60 3+57=60

всего тут 60 числел,если считать от 1 до 59, а чтобы быстро найти ответ, мы 60 умножаем на 29. 29-это примерно половина этих чисел. ответ 1740

отметь как лучший

kanatdarmenovk: спс
Lilycreativity: я там ноль забыла. ответ 1740. сорри
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