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khaetskie
@khaetskie
November 2021
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Подскажите, пожалуйста, как вычислить 1*99+2*99+3*99+.....+98*99+99*99
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IrkaShevko
Verified answer
Вынесем 99 за скобку:
99(1 + 2 + 3 + 4 + ... + 98 + 99) = 99 * (1 + 99)/2 * 99 = 50 * 99 * 99 = 490050
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Verified answer
Вынесем 99 за скобку:99(1 + 2 + 3 + 4 + ... + 98 + 99) = 99 * (1 + 99)/2 * 99 = 50 * 99 * 99 = 490050