Hello candidate,

Here I am suggesting you some of the best books which you might find helpful for preparation in M A economics exam-

Books by Sydsaeter and Hammond for Mathematics.

For statistics and econometrics - Gujarati's Introductory Econometrics, Degroot and Schervish.

Macroeconomics - Development Economics by Debraj Ray, O.Blanchard, Dornbush and Fischer

But apart from just solving the books you need to solve previous year question papers of Delhi School of economics, jawaharlal Nehru University, Indian statistical Institute so that you can get to know about the kinds of question asked and rate your current preparation level to boost it up accordingly.

Hope you found it helpful. If you have any further queries, feel free to post it here!!