What has no start, end, or centre?

How many triangles are there on the puzzle below?

When it is alive we sing, when it is dead we clap our hands. What is it?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

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

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

Give it food and it will live; give it water and it will die.