Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

I can write cow in 13 letters.

Can You?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

By moving just one matchstick, you need to make the below statement true. Can you do it?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

What is the riddle which can be asked all day with a different correct answer each time.