This was an easy one!

The sum of the squares of the first ten natural numbers is,

1

^{2}+ 2^{2}+ ... + 10^{2}= 385The square of the sum of the first ten natural numbers is,

(1 + 2 + ... + 10)

^{2}= 55^{2}= 3025Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025 385 = 2640.

Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.

$sumSquares = $squareSums = $difference = 0

for ($i=1;$i -le 100;$i++)

{

$sumSquares += [Math]::Pow($i,2)

$squareSums += $i

}

$difference = [math]::Pow($squareSums,2) - $sumSquares

$difference

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