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?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Can you find out the remainder when 3^300 is divided by 5?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Our product and our sum always give the same answer. Who are we?

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?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

You need to arrange three 7 and mathematical symbols to form number 1?