A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

What has one letter and starts with an E?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What is always in front of you but can’t be seen?

A father's child, a mother's child, yet no one's son.

Who am I?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.