How to improve in verbal and RC section and data interpretation section ??

To improve DI, follow few steps:
Scan the question: Most Data Interpretation questions will consist of a bunch of statistics, numbers & diagrams that might look scary (to baffle you) but are actually not at all difficult to solve. In fact the trend has been: the scarier a DI set/caselet looks, the easier it is to solve. So before you lose heart & move on to an easier-looking set/caselet, scan that scary set & the list of questions in it.
Improve your calculation speed: The Date Interpretation section is calculation-intensive. Learn shortcuts that will help you calculate in your head or better still; figure out how Vedic Maths works. It will help you a lot!
Get familiar with all types of questions: When you have been practicing DI questions for a while, you’ll begin to notice that there are different types or formats of questions in this section. There will be bar charts, tables, pie charts etc. There will also be questions where a lot of text/information will be provided in 1 long paragraph. Work on your reading & comprehension speed. It will go a long way in helping you tackle this section. Also try reading business newspapers which have articles that are data-intensive & have graphs & pie-charts etc. After reading the article, try to mentally collate & analyse the data provided in them. Such activities will help you get into the “DI mode” & stay in that mode always!