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?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

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

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 know a nine-letter word having only one vowel.
Do you ?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

If six children and two dogs were under an umbrella, how come none of them got wet?

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.

I am the fastest animal but cannot climb the tree. What am I?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?