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What is the sum of the first 25 integers from 1.

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f32 | Student, Grade 9 | (Level 1) Honors

Posted July 15, 2013 at 3:01 AM via web

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What is the sum of the first 25 integers from 1.

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted July 15, 2013 at 3:05 AM (Answer #1)

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The sum of the first 25 integers from 1 has to be determined. This can be taken as an arithmetic series with first term 1 and the common difference between consecutive terms as 1.

The sum of the first 25 terms is (25/2)*(1 + 25) = 26*25/2 = 325

The required sum of the first 25 integers starting with 1 is 325

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