As many of you may recall, last year there was a problem with someone cheating here on the entrance problem set for the PRIMES high school research program at MIT. Selection for PRIMES for this year has begun, and they're taking more precautions this year to avoid this happening again. There's some things they're doing on their end, but the way these incidents are usually caught is when a m.SE user happens to recognize the problems.
So the directors of PRIMES asked me to post a link to the problem set here, and ask that if anyone sees any of their problems posted here that they be closed and that the moderators contact Pavel Etingof.
Obviously no one expects that all m.SE users will be aware of the PRIMES problems, but if an extra hundred m.SE users know them it could make a big difference in how quickly the questions get closed. Also obviously, entrance problem sets like this are a very different issue from homework, so hopefully we can stay on topic on this thread and not veer into more controversial topics.
Thanks, both from me and from the PRIMES directors for your help!