Replace the question mark with the correct number.

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 ?

Can you find the hidden animal in the picture below?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Which is faster, Heat or Cold ? Explain.

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Can you solve this picture maths equation?