Why did the Girl throw the butter out of the window?

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?

If six children and two dogs were under an umbrella, how come none of them got wet?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Why do we preferably have round manhole covers and not square ones?

Find the next number in the series below.

6 18 270 72090 ?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Can you count the number of quadrilaterals in the picture below?

Can you name four days which start with the letter 'T'?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?