A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I have Rs.50 and I spend it in the way as below.

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

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

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

It is always ahead of me yet I can never see it. What is it?

What do you think with the below Picture ?

Can you count the number of triangles in the given picture?