Avoid answering questions you are unsure of because the AFCAT has a negative marking system and you will lose three marks if you answer three questions incorrectly.
For your math or spatial ability part, use the rough paper provided by IAF.
One of the simpler AFCAT exam portions is spatial ability; 80–90% of candidates can score higher on the military aptitude and spatial ability tests.
Many candidates made mistakes when filling out their OMR sheets last year, which led to their OMR sheets being flagged as invalid and disqualified from consideration for the AFCAT tests.