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### What kinda math should i know?

Posted: **Thu Oct 08, 2020 1:54 am**

by **MrYuri**

What kind of math should i know for these questions? ive done a few but now they seem to include math that i dont know.

So what should i learn?

### Re: What kinda math should i know?

Posted: **Thu Oct 08, 2020 7:29 am**

by **pjt33**

"Elementary number theory" will help with an awful lot of them. "Enumerative combinatorics" is also a popular topic. It helps to be able to recognise a Markov process and know how to analyse it with linear algebra. There are plenty of probability questions, so you'll need to know what expectation is and techniques for calculating it.

Also, if you read the threads which you unlock when you solve a problem, the techniques which people mention are often key to solving later problems in the same area.

### Re: What kinda math should i know?

Posted: **Mon Nov 09, 2020 5:04 pm**

by **Tomdraug**

It is excellent question. Also answer is interesting.

I’m a developer with technical university background and I have just discovered this delightfully frightening site. I solved problem 41 easily and I started another one, 731.

This is nightmare. I don’t even know how to approach it, ie what book I need, how to write anything in one of 20+ languages I know

I know what infinite series is and all the notation, but the problem is far harder that that.

All in all - it will be nice journey

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I solved 731 lol