What breaks yet never falls, and what falls yet never breaks?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

What does an Island and the letter T have in common?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Where do you go to learn how to make ice cream?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?