See the media section.
These tests are insanely hard, how can I pass?
Actually the test does what it needs to, it filters people with very strong numerical skills. Some people do it in about 2 seconds per question, others will never make it. Most traders who take the test and pass have never practiced it but are simply good in mental arithmetic. Trading firms are testing people by the bucket load and only very few pass. Practice helps a lot and it might make the difference between making it or joining the other 90+%.
How often can I try?
Most companies have a once-a-lifetime policy. A smart strategy to follow if you have failed one is to practice a lot more and only then try with another firm, as apparently they're all hard.
How real are the tests?
They're close, but not exact. The basics are the same but the amount of terms or decimals can vary. If you want to have another test added, please contact TraderTest.
How are you funded?
All the work on this site is voluntary. Professionally I work for Optiver. (However TraderTest is a lot older than that and will always be free and unbound.)
Do all firms you send resumes to use a test?
Not all of them do. They are all interested in you as a trader so chances are that you'll be put in front of a computer and you're required to show you can reach the scores you've sent along with your resume. Lying about scores is about the same as marking a position while you're trading, it's an instant exit guarantee.
Math is not my strong point, but I do have other skills
Please do submit your resume as well! Trading is not only about mental calculus but it's a rather technical affair these days. Complementary skills can really help you pass a not-so-good math test.
To Aleksander Lishkov for the sequence test ideas.