How to solve question 3

329-19-20-PS1.pdf - Adobe Acrobat Reader DC X File Edit View Window Help Home Tools 329-19-20-PS1.pdf x ? Sign In T 1 /1 + 154% Share 1. a) If exactly three of the five propositions A, B, C, D and E are true and exactly tv Search 'Header' (AAB) V (C = D), (BAC) V (D = E) and (C A D) V (E = A) are also true, Lo Export PDF one of the two propositions (A = B) A (C V D) and (B = C) A (D V E) is true Lo Create PDF = Edit PDF b) Can we affirm that the proposition ((P A Q) = S) ((Q AR) = P) a valid co. Comment propositions P = (Q = R), Q = (R = S) and R = (S = P)? Why or why not Combine Files ED Organize Pages 2. Suppose that Vk E N, we define Sk = {x E Z| |x - k| + |2x + 3k|