It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Why 1729 is a magic number? Answer Logically.