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 ?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?

If an electric train is travelling south, then which way is the smoke going?

Spot 5 differences in two Christmas tree below:

What occurs twice in a week, once in a year but never in a day?

Take one out and scratch my head, I am now black but once was red. What am I?

Prove that twice of ten is the same as twice of eleven.

What is the end of everything?