Предмет: Математика, автор: Nastya7722

1+2+3+4+5....+97+98+99+100=???

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Автор ответа: Олеся9006

0

100 чисел, значит, 100:2=50 пар чисел. Сумма каждой пары равна 101. 100+1, 99+2, 98+3 и тд. Получаем: 101*50=5050.

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