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?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Can you count the number of triangles in the given picture?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Count the squares in the matchstick puzzle below?