How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

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?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Decode below three cipher riddles:

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

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?