What occurs twice in a week, once in a year but never in a day?

I have teeth but i don't bite. Who Am I ?

Imagine you are in a room with no windows or doors. How will you get out?

What can go through glass without breaking it?

Can you identify if it's a murder or a suicide ?

A monk has a very specific ritual for climbing up the steps to the temple. First, he climbs up to the middle step and meditates for 1 minute. Then he climbs up 8 steps and faces east until he hears a bird singing. Then he walks down 12 steps and picks up a pebble. He takes one step up and tosses the pebble over his left shoulder. Now, he walks up the remaining steps three at a time which only takes him 9 paces. How many steps are there?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

One day, all the courtiers from Akbar's court were gathered in the assembly hall when one of them told the Emperor that all his valuables had been stolen by a thief the previous night.
This shocked the Emperor to his core as the place where that courter stayed was the most secured in the kingdom. The Emperor thought that it is not at all possible for an outsider to enter into the courtier's house and steal the valuables. Only another courtier could commit this crime. He quickly called Birbal to identify the thief.
Birbal thought for a while and successfully solved the mystery by identifying the thief in just one statement.
What did Birbal say?

What question can you never answer yes to?

I always drive my customer away.

Who am I?