2. (a) It is not the case that I will receive a promotion.
2. (b) If I will receive a promotion, then I will take a vacation.
2. (c) If and only if I will receive a promotion, then I will
take a vacation.
2. (d) If I will not receive a promotion, then I will quit
my job.
2. (e) If I will receive a promotion, then I will take a vacation
and I will not quit my job.
2. (f) If and only if I will not receive a promotion, then
I will quit my job.
6. (a) If the salt will not pour, then it does not rain.
6. (b) If the salt will pour, then it rains.
6. (c) If it does not rain, then the salt will not pour.
10. (a) If p and q, then p.
10. (b) If and only if p then not p.
10. (c) If it is not the case that p and q, the p or q.
10. (d) I p the q, if and only if not p or q.
14. Not a valid argument (not a tautology, one F appears).
18. (a) If I can play hockey, then I finished my homework.
18. (b) If I can not play hockey, then I did not finish my
homework.
18. (c) If I do not finish my homework, then I cannot play
hockey.
22. Valid argument (a tautology).
26. Tautology.
