Relationship b/w difficulty level and Total Score

Hi, Param. The chart you are referring to in GMATPrep is not giving you the difficulty rating of individual questions that then translates into a specific score. Questions in GMATPrep are designated as “low,” “medium,” and “high.” What you are seeing is the average difficulty level of the questions you completed, not a score rating for individual questions.

There is not a set number of questions at a specific rating level that then automatically translate into a specific score. Your Total score is a cumulative evaluation of how you performed throughout the quantitative and verbal sections, including whether or not you finished. I hope that answers your question.