1. Find seven different unit fractions whose sum is 1. So(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \frac{1}{a} + \frac{1}{b} + \frac{1}{c} + \frac{1}{d} + \frac{1}{e} + \frac{1}{f} + \frac{1}{g} = 1 [/tex] Would this just be purely guess and check?

2. How many different 6 digit numbers can you make using [tex] 1,2,5,6,7,9 [/tex]. Would it just be [tex] 6! [/tex]? Also how would you find how many of these numbers are divisble by 6?

Thanks!

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# Homework Help: Number Theory

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