Show that ¬(pq)p¬q

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

pqp↔q¬(p↔q)¬qp↔¬q
TT
TF
FT
FF

 



From column (4) and (6) it is that ¬(pq)p¬q