Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

How many triangles are there in the picture below?

Can you count the number of triangles inside a triangle?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Who is that with a neck and no head, two arms and no hands? What is it?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?