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 bomb exploded in a room full of married couples and no one died. How?

What does this below rebus puzzle mean?

What number divided by 4 is the same as that number minus 4?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

What is next number in the pattern below:

131 517 192 123 ?

How many letters are in the alphabet?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?