The BIT-SAT takes know that they have the option to solve extra 12 questions. But there is a confusion whether to attempt them or not? As per the Brochure: So, the important points to be noted are: You are not given any extra time to answer these questions. You need to attempt all 150 questions. You cannot leave any question blank You cannot go back any change any of your answers According to BITS, these extra 12 questions are a designed to be tougher than the rest. Whereas, almost every BITSian who has got a score of 350+ claims to have attempted these extra 12 questions. :sshhh: So if you use a little guesswork and do a little time management, I think you should attempt those 12 Extra Questions.