. Let P(x) be the statement “x can speak Russian” and let Q(x) be the statement “x knows the computer language C .” Express each of these sentences in terms of P(x), Q(x), quantifiers, and logical connectives. The domain for quantifiers consists of all students at your school. 1.4 Predicates and Quantifiers 57 a) There is a student at your school who can speak Russian and who knows C . b) There is a student at your school who can speak Russian but who doesn’t know C . c) Every student at your school either can speak Russian or knows C . d) No student at your school can speak Russian or knows C .
