Identify the hidden meaning behind this picture?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

Take one out and scratch my head, I am now black but once was red. What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

What is the word or phrase?

How many triangles are there on the puzzle below?

How many triangles are there in the picture below?