Question 0401c

Arithmetic and Geometric Progressions (APs, GPs)
AP III

Question

Consider the arithmetic series
1+4+9+- 1 + 4 + 9 + \ldots
Find the least value of n{n} for which the sum of the first n{n} terms of the series exceeds 500.{500.}

Attempt

Least n={n=}

Answer

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