Can you place six X (crosses) in below board without making three in a row in any way ?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Which tank will fill first?

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

Can you count the number of squares in the figure below?

What jumps when it walks and sits when it stands?

Count the number of squares in the picture below.

I don't get anymore wetter, no matter how much rain falls on me.

What has one eye, but can’t see?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?