Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Discover a wealth of knowledge from professionals across various disciplines on our user-friendly Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

6) In a school, out of 400 students, 300
students opt for at least one subject out of
Biology, Chemistry and Mathematics. If 120
students opted for Biology, 150 students
opted for Chemistry, 200 students opted for
Mathematics and 30 opted for all the three
subjects, find the number of students who
opted for exactly two subjects.