What has hands, but can’t clap?

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

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

What can go through glass without breaking it?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _