You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

Remove two matchsticks to make the below equation correct.

Can you place three balls such that the equation shown in the picture holds true?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Different lights make me strange by changing me into different sizes. What am I?

In The Image Below Which clock is the odd one out?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Why 1729 is a magic number? Answer Logically.