Any idea about PSC exam?

Hello. I had applied for a government job last September and i got a letter today, informing me that i have to take part in an exam on the 2nd of April (to test my problem solving skills and administrative skills as well). I was wondering what kind of questions would i be getting.. I have only 15 days left to prepare myself. They also told me to bring ruler, calculator, pencil and all. Thanks for the upcoming help. :)