You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

I am the fastest animal but cannot climb the tree. What am I?

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

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

It belongs to you, but other people use it more than you do. What is it?

I add 5 to 9 and get 2. The answer is correct, so what am I?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?