Group 1 - 1



   Fill in the blanks with the shortest of characters so that the resultant proposition is valid

   Do not leave space at the left of your answer in each box.
   Use T or F for True or False, respectively.

  a) ~( ~P ^ Q ) <=> ( ~Q  P )

  b) ( ~P V ( Q -> P ) ) <=> ( ~P V (  V P ) ) <=>

  c) ( ( P V Q ) ^  ) -> P

  d) ( ~Q ^ P ) <=> ~( P   Q )




          





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