Question 8 Let A, B and C be non-empty sets and let X = (A – B) – C and Y = (A – C) – […]

Question 11 Let G be a simple graph with 20 vertices and 100 edges. The size of the minimum vertex cover of G is 8. Then, […]

Question 40 Let P, Q and R be three atomic prepositional assertions. Let X denote (P ∨ Q) → R and Y denote (P → R) […]

Question 42 Let R and S be any two equivalence relations on a non-empty set A. Which one of the following statements is TRUE? A R∪S, […]