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# Difference Of Squares
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
The square of the sum of the first ten natural numbers is
(1 + 2 + ... + 10)² = 55² = 3025.
The sum of the squares of the first ten natural numbers is
1² + 2² + ... + 10² = 385.
Hence the difference between the square of the sum of the first
ten natural numbers and the sum of the squares of the first ten
natural numbers is 3025 - 385 = 2640.
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## Source
Problem 6 at Project Euler [http://projecteuler.net/problem=6](http://projecteuler.net/problem=6)
## Submitting Incomplete Solutions
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