For Prelims, Vivek Singh is the top choice. For Mains answer writing, you might supplement with Sanjiv Verma, but for conceptual clarity, Vivek Singh wins.

Since you are looking for the "top" PDF materials by Vivek Singh regarding the Indian Economy, you are likely preparing for competitive exams like UPSC, State PSC, or SSC, where Indian Economy is a crucial subject.

As of 2022, the Indian economy is the fifth-largest economy in the world, with a nominal GDP of over $2.7 trillion. The country has made significant progress in poverty reduction, with the poverty rate declining from 45% in 1993-94 to 22% in 2011-12. The Indian government has implemented various policies to promote economic growth, including the Goods and Services Tax (GST), demonetization, and Make in India.