There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

If eleven plus two equals one, what does nine plus five equal?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

I taste better than I can smell. Who am I?

They are three errirs in this question. Can you find them?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?