Hello there! 
Greetings! 
IIM Indore has removed the criteria of Maths as a compulsory subject for selection to IPMProgram. Hence, a student without maths is eligible to apply to the program. So you need not to worry for not having maths.
For General and NC-OBC a Minimum of 60 percent marks in Class X/ SSC and XII/ HSC or equivalent exams is required to be eligible.
So you need to first clear your class 12 with at least 60 percent marks or more to be eligible.
Thankyou