hello aspirant<

To get admission in IIM Ahmdbd, you should have a good academics and most importantly you should have a good cat score to get a call from the college.So,firstly you should focus on cat exam and for maths that is quant section you can start from scratch that is first do the basics then go to level of difficulty 2. you can get coaching from IMS,TIMES,ENDAVOUR CAREERS like institutes, and the question which you asked that is about score,,yes yours scores are valid to be considered for iim..its just you have to reach cutt off of CAT exam.