In the verbal section you will have 75 minutes to answer 41 questions.
11 of these questions are experimental and would not be counted towards your score. There is no way to identify which questions are experimental as they are mixed in randomly through out the section.
This section includes three types of questions: sentence correction, critical reading, and reading comprehension. Sentence correction questions test your ability to spot grammatical mistakes. The Critical reasoning questions test your ability to understand and analyze arguments. And the reading comprehension tests your ability to find information in a long passage.
One can calculate the exact answer for a math question but the credited answers for a verbal question seem very subjective and arbitrary. Here an answer choice is correct because it is better than other four answer choices.