Answer:
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
What did the thief get for stealing the calendar?
What force and strength cannot get through, I with my unique teeth can do. What am I?
I am often sold by children entrepreneurs in summer time
What is eaten but can also eat?
What never gets any wetter no matter how hard it rains?