Question number 14 math problam 1+2+3+4+..98 using n/2

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Question number 14 math problam 1+2+3+4+..98 using n/2

use gauss approach to solve problem arithmetic sequence

Jan 18th, 2015

there are 98 numbers 

sum = 98 *(1+98)/2 = 49 *99=4851

Jan 18th, 2015

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Jan 18th, 2015
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Jan 18th, 2015
Jun 28th, 2017
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