(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove a simple formula for the number of closed intervals with integer endpoints contained in the interval [1,n] (including one point intervals), where n is a natural number.

3. The attempt at a solution

I know that the formula ends up being the sum of i from i=1 to i=n (this makes sense just from inspection) but I have no idea how to actually go about proving the claim.

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# Homework Help: Proving a formula for the number of intervals contained in [1,n]

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