Move four matchsticks to the below square to form three squares?

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

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

Rihana, Peeta, and Logan order a pizza for $10. Out of the three, Rihana and Peeta were quite hungry and ate 6 slices a piece, while Logan had just 2 slices.

Now, they want to split the cost among them fairly but due to the lack of change, they decide to round off the cost to the nearest possible dollar.

Can you find out the fairway which should be used to split the money?

What if the pizza was worth $11?

There are three cows, two dogs, and one cat: How many legs do you have?

What goes up but never comes down?

I have eight fingers and two thumbs but I do not live. What Am I?

Where do fish keep their money?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?