How can I pass my B. Tech maths exam if I am not good at maths?

Hi, First of all, be motivated and sincere to pass your exam. You have got very less time to prepare. So, you can go through your notes for revision. You can also go through past year papers as many questions are repeated and you will get to know about the level of questions and exam pattern. Practice mocks and questions focusing maths. if you find unable to improve in it within this less time span then focus on your good than weaker sections. Do not skip the preparation in large. Good Luck.