I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

Prove that twice of ten is the same as twice of eleven.

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

What is the next number?

77, 49, 36, 18 ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

I’m orange, I wear a green hat and I sound like a parrot. What am I?

The more it dries, the wetter it becomes. Can you tell what it is?

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

What occurs twice in a week, once in a year but never in a day?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?