What is common among 11, 69, and 88?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

How could a baby fall out of a twenty-story building onto the ground and live?

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

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

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

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?