Our product and our sum always give the same answer. Who are we?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

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?

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

Which of the below owl is odd one out?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

How can you tell a raw egg from a hard-boiled egg?

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