posted by alicia on .
Write the following argument symbolically and then determine its validity:
If you are fair-skinned, you will sunburn.
If you sunburn, you will not go to the dance.
If you do not go to the dance, your parents will want to know why you didn’t go to the dance.
Your parents do not want to know why you didn’t go to the dance.
Therefore, you are not fair-skinned.