A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

People make me, save me, change me, raise me. What am I?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Which part of London exists in France as well ?

Solve the puzzle by telling what does below picture means.

Which flower has two lips?

If 1+9+8=1, what is 2+8+9?