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)?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

There is something which is always coming but never arrives?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Why are all black people so quick ?

Count the number of balls in picture below:

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?