Construct truth tables for the following wffs. note any tautologies or contradictions.
a. a -> (b -> a) b. a /\ b < -> b' v a' c. (a v b') /\ (a /\ b)' d. [(a v b) /\ c'] -> a' v c e. a' -> (b v c')

File i/o activity objective: the objective of this activity is to practice working with text files in c#. for this activity, you may do all code in the main class. instructions: create an app that will read integers from an input file name numbers. txt that will consist of one integer per record. example: 4 8 25 101 determine which numbers are even and which are odd. write the even numbers to a file named even. txt and the odd numbers to a file named odd. txt.