Prove that the below maths equation is true.

8 + 8 = 91

Forwards I am heavy, backward I am not. What am I?

Why do you find that most of the buildings are deprived of the 13th floor?

Who is that with a neck and no head, two arms and no hands? What is it?

If two's company, and three's a crowd, then whats four and five ?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Decode this picture on T-Shirt and tell what it says ?