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A sequence contains terms that doesn't have any perfect square factors (except 1). 2, 3, 5, 6, 7, 10, 11, 13, 14, 15...

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The sequence below contains terms that doesn't have any perfect square factors (except 1).
2, 3, 5, 6, 7, 10, 11, 13, 14, 15...

What is the sum of the square-roots of the terms starting from 2 to the largest two-digit term?

posted May 7 by anonymous

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1 Answer

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408.59


see attached picture for solution, red highlighted are excluded numbers


enter image description here

answer May 11 by Hanifa Mammadov
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