the algebra section that is coverd in quant might b very helpful in preparing for ISI/DSE level maths......topics include ..
1.upto n degree polynomials and roots,
2.functions and graphs (curve sketching),
3.permutations and combinations,
4.probability,
5.Logarithm
6.sequence, series and progressions
Akshay Jain
Masters in Economics
Delhi School of Economics
2013-15