what is the deficulty leval of isi exam
Hey there
ISI exam one of the toughest exam of india. Since it is concentrated to maths in b.stat so the difficulty level is of jee advanced level or more. The MCQ is not that tough but the subjective questions are really tough and since there is step wise marking you'll have to write the whole solution step wise which takes time. But if you are preparing for jee advanced then you'll definitely have chances for isi.
Good luck