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MATH / Find the smallest integer n for which the sum of the integers from −25 to n (including −25 and n) is at least 26.

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

Find the smallest integer nn for which the sum of the integers from −25-25 to nn (including −25-25 and nn) is at least 2626.
Plain-text mathematical notation (without MathML)
Find the smallest integer n for which the sum of the integers from −25 to n (including −25 and n) is at least 26.
Original LaTeX notation
Find the smallest integer $n$ for which the sum of the integers from $-25$ to $n$ (including $-25$ and $n$) is at least $26$.

level

Level 4

type

Algebra

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Source and history

Official source

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