It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

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 ?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

What has many keys but can’t open a single lock?

When can we add 2 to 11 and get 1 as the correct answer?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What is so fragile that saying its name breaks it?

What number comes next in this sequence:
7 8 5 5 3 4 4 _