they also ask me to find out whether this stament is a tautology
i got as answer that this is not a tautology
you were doing so well, but this is incorrect.
finally they ask me to by using morgan laws translate the following statement into a statement that means the same thing.
The exam was easy and I studied all night.
my answer is
I studied all night then the exam was easy.
recall what DeMorgan's Laws say, there are two of them (that I know of):
The statement we have is of the form
= "The exam was easy"
= "I studied all night"
= "The exam was hard" or if you want to be technical, "The exam was not easy"
= "I did not study all night"
So, the answer you are looking for is:
= "It is not true that the exam was hard or that I did not study all night"