That translates to one lost point for four wrong answers. The results of CAT are not disclosed to the students. The scores are sent directly to the IIMs where you have applied, and they are the ones who see an applicant's CAT score. Based on the score, the IIM will then call you for a group discussion and a personal interview. In the end, it is only the institute that gets to see your CAT score, not you.
Some institutes prefer an applicant's CAT score over their own entrance test scores.
That shows the importance of the CAT if you are trying to gain admission into management. So, put on your thinking cap, retrieve that old mathematics book from your dusty cabinet and burn the midnight oil.