In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

How many letters are in the alphabet?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

In the image below, can you find the value of an angle(y)

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Give it food and it will live; give it water and it will die.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?