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?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you count the number of triangles inside a triangle?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

What can go through glass without breaking it?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Why Aeroplane windows are round?

What work can one never finish?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)