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

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

What part of Turkey has the most feathers?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Solve the following series:
AZ, GT, MN, __, YB

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?