Before Mount Everest was discovered, what was the highest mountain in the world?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Do You See It?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

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

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?

Which Burger Is Different in below image?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Why did the Girl throw the butter out of the window?