There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

What goes up but never comes down?

Which wheel of car does not rotate when you turn your car right?

People make me, save me, change me, raise me. What am I?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

I shave every day, but my beard stays the same. What am I?

What can you see in the middle of March and April that you can never see in any other month?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

In the image given, you can find several triangles. Can you count them all?