A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Find the next number in the following series:
6, 14, 26, 98, __?

What makes this number unique: 8,549,176,320?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?