What is full of holes but still holds water?

I shave every day, but my beard stays the same. What am I?

Count the number of triangles in the picture below:

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

In which direction should the missing arrow point?

Find the next number in the sequence

5 12 24 36 ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

When 99 is considered higher than 100?