You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

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?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

What brings you down but never up?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

What Does this text mean:

important=important

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?