Hi Ritik.Yes ofcourse you can crack your exam with your desired marks if you do hard work for these 15-18 days.First of all practice model papers as many as possible.Donot feel tensed the exam standard will be very easy. There will be many direct questions which can be answered only by seeing them.

Here are some tips you can follow to get your desired score.

https://www.embibe.com/exams/comedk-preparation/undefined