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

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What is the fastest way to double your money?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?