How can you write nineteen in a manner that if we take out one, it becomes twenty?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

How many Watermelons are there in the below picture?

Which part of London exists in France as well ?

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

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Cristina was born in 1888. She just had her 30th birthday today how did that happen?