Consider two well formed formulas in prepositional logic El P iP E2 Pi iP v iPiP Which of the following

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Previous Question: Consider the following relations: R1 (a,b) iff (a+b) is even over the set of integers R2 (a,b) iff (a+b) is odd over the set of integers R3 (a,b) iff a.b > 0 over the set of non-zero rational numbers R4 (a,b) iff a + bi 2 over the set of natural numbers Which of the following statements is correct? (a) Ri and R2 are equivalence relations, R3 and R4 are not (b) Ri and R3 are equivalence relations, R2 and R4 are not (c) Ri and R4 are equivalence relations, R2 and R3 are not (d) Ri, R2, R3 and R4 are all equivalence relations Next Question: How many 4-digit even numbers have all 4 digits distinct? (a) 2240 (b) 2296 (c) 2620 (d) 4536

(#M40021674) GATE question MATHS Keep an EYE

Consider two well-formed formulas in prepositional logic
El: P - iP
E2: (Pi - iP)v(--iPiP)
Which of the following statements is correct?
(a) Fl is satisfiable, F2 is valid
(b) Fl unsatisfiable, F2 is satisfiable
(c) Fl is unsatisfiable, F2 is valid
(d) Fl and F2 are both satisfiable: Asked In Gate MAN (11 years ago); Unsolved; Is this Puzzle helpful? (0) (0) Submit Your Solution

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Latest Gate Aptitude Question SOLUTION: Consider two well-formed formulas in prepositional logic El: P - iP E2: (Pi - iP)v(--iPiP) Which of the following statements is correct? (a) Fl is satisfiable, F2 is valid (b) Fl