If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

Replace the question mark with the correct number in below Picture:

What is the longest word in the dictionary?

Can you count the number of children in the picture below

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What is common among 11, 69, and 88?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?