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3. (15 pt., 3 pt. each) Let S(x) be the statement x is a student, P(x) be the statement x is a professor, and Q(x,

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3. (15 pt., 3 pt. each) Let S(x) be the statement "x is a student," P(x) be the statement "x is a professor," and Q(x, y be the statement "x asked a question to y." If the domain of x and y consists of all people, express each of the following sentences in terms of S(x), P(x), Qx. y), quantifiers, and logical operators. Example: Some student has asked every professor a question Answer. 3x(S(x) ^ Vy(P(y) Q(x,y))) a. Every professor has been asked a question by some student. b. No professor has been asked a question by every student c. There is a student who has never asked a question to a professor. d. There is a professor who has been asked a question by exactly one student. e. There are two different students who have asked each other a

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