If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

What seven-letter word has hundreds of letters in it?

Spot what is wrong here in below Picture?

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Which Travels Faster? Solve below famous picture riddle:

The more it dries, the wetter it becomes. Can you tell what it is?

How many times do a clock's hands overlap in a day ?