Count the number of triangles in the picture below:

If eleven plus two equals one, what does nine plus five equal?

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?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

What happened when the wheel was invented?

Can you find the dog hidden in a group of pandas?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Solve the following series:
AZ, GT, MN, __, YB

What is the fastest way to double your money?