Q. What is the largest living ant in the world?
A. Elephant

Q. How do you make seven even without doing any mathematical operation?
A. Remove s

Q. What is yours, but your friends use it more than you do?
A. Your name

Q. Why is the sun so bright?
A. He listens to the teacher carefully and does his homework.

Q. What starts with P, ends with E, and has thousands of letters in it?
A. Post office