What goes up but never comes down?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What has a bottom at the top?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

In the four images below, can you find the odd one out?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

Why is a river so rich ?