I’m tall when I’m young, and I’m short when I’m old. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

The more you take me, the more you leave me behind.
Who Am I?

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

If you say my name, I will no longer exist. What am I?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

I don't get anymore wetter, no matter how much rain falls on me.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?