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ScanSolve AI Answer
You're on a roll — here are the solutions to the math problems. ITEM 1 Let P represent students who brought a pen, C for pencil, and R for ruler. Total students = 40. Students who brought all 3 instruments: |P C R| = 12. Students who didn't have any instrument: |(P C R)'| = 5. So, students who had at least one instrument: |P C R| = 40 - 5 = 35. From the given information, we can deduce the number of students who had only one type of instrument or only two types. Let's denote the number of