Can you find out which number multiplied by itself will give the output as 12345678987654321?

What Adam and Eve do not have but the rest of the people have?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

How can you leave a room with two legs and return with six legs?

What type of tree can I carry in my hand?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

I have teeth but i don't bite. Who Am I ?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.