How many time can you take the PowerPrep exams?

[giantpanda]

There are two tests in the software, but I've read that you will get different questions if you take either test more than once. Anyone know how many times you can take them?

[waddle]

∞.

You get different questions because it's computer-adaptive. That is, the difficulty of the next question presented depends on the difficulty of the questions you previously answered, and whether you answered them correctly or incorrectly.

Honestly, I would just take the PowerPrep tests twice: once when you've just started preparing for the GRE (maybe 2-3 weeks before the test) and the second time a few days before the GRE.