What has hands, but can’t clap?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Look at the picture and find out which square is not linked with any of the other squares.

A sundial has the fewest moving parts of any timepiece. Which has the most?

When can we add 2 to 11 and get 1 as the correct answer?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

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

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Why Aeroplane windows are round?