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?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

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

What Time Should the last watch show in the below figure?

Why do you find that most of the buildings are deprived of the 13th floor?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

If an electric train is travelling south, then which way is the smoke going?