solving number of questions is worth or reading more theory is worth?

Both are important.But the smart way to prepare is to go through the theory and practise more and more questions.Solving questions will help you to apply the theoru you read .Without knowing the application of theory , it is useless .

Before solving questions of any topiv, you should know the theory related to that topic. Once the theory part is over , you must practice more and more problem but they should be of different kind. Never ever try to fool yourself by solving easy questions of Same type Remember atlast your concept matters, not the no. Of questions you have practiced. So the best way is read the theory once and try to attempt different types of questions related to that theory.Best of luck. Always remember during preparation, quality matters,not the quantity.