In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What makes this number unique: 8,549,176,320?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

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

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?