In a class, there are three types of students: those who play football, those who play basketball, and those who play both. If 10 students play football, 8 play basketball, and 3 play both, how many students play only football?
In a class, there are three types of students: A, B, and C. Type A students are good at mathematics, Type B students are good at science, and Type C students are good at literature. If John is a Type A student and Sarah is a Type B student, which of the following statements is true?