Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

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"

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

You need to move three matchsticks to form three squares. Can you do it?

What is the difference between a jeweller and a jailer?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?