## anonymous one year ago Geometry Make a conjecture : The sum of the first 100 positive even numbers

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1. zzr0ck3r

$$\sum_{k=1}^{100}2k=2\sum_{k=1}^{100}k=2\dfrac{100(101)}{2}=\ ?$$

2. zzr0ck3r

I am not sure how this is geometry

3. anonymous

Me either but it's in the book