How can one talk without saying a single word?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

There was a strange boy who was born before his father. How can this be possible?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Find the number of squares in the below-given picture.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

What Time Should the last watch show in the below figure?