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)?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

What month of the year has 28 days?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

In the picture given below, can you find out which digit will take place of the question mark?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

What kind of band never plays music?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?