P80
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Square Root Digital Expansion

ℹ️Published on Friday, 8th October 2004, 06:00 pm; Solved by 22152;
Difficulty rating: 20%

It is well known that if the square root of a natural number is not an integer, then it is irrational. The decimal expansion of such square roots is infinite without any repeating pattern at all.

The square root of two is $1.41421356237309504880\cdots$, and the digital sum of the first one hundred decimal digits is $475$.

For the first one hundred natural numbers, find the total of the digital sums of the first one hundred decimal digits for all the irrational square roots.



Soluzione

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