You need to arrange three 7 and mathematical symbols to form number 1?

Take away the whole and some still remain. What is it?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What am I?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

How many times can you subtract the number 5 from 25?