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

What is more useful when it is broken?

Replace the question mark in the picture below.

When can we add 2 to 11 and get 1 as the correct answer?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Forwards I am heavy, backward I am not. What am I?

Count the number of balls in picture below:

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?