What is so fragile that saying its name breaks it?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

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

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?