I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

No matter how little or how much you use me, you change me every month. What am I?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

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

If an electric train is travelling south, then which way is the smoke going?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Spot the cat in the picture below

This was asked in an interview with Coa-Cola.

The interviewer has given me 100 marbles(50 white and 50 black) and two empty boxes.
He then told me that he will leave the room and i need to place all the marbles in two boxes.

And When he come back, he will draw a marble from any of the two box and if the marble is white I will be hired.

Also
* No box can be empty.
* All 100 marbles must be placed in one of the two boxes.

So what should I have done?

What is common among 11, 69, and 88?