The more of this there is, the less you see. What is it?

Which is the correct shadow of the bird?

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

What Am I?

A monk has a very specific ritual for climbing up the steps to the temple. First, he climbs up to the middle step and meditates for 1 minute. Then he climbs up 8 steps and faces east until he hears a bird singing. Then he walks down 12 steps and picks up a pebble. He takes one step up and tosses the pebble over his left shoulder. Now, he walks up the remaining steps three at a time which only takes him 9 paces. How many steps are there?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?