A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

If an electric train is travelling south, then which way is the smoke going?