Why is the Hole below a Lock?

What type of tree can I carry in my hand?

In the four images below, can you find the odd one out?

What time is it when an elephant sits on a fence?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

What is the next number in this matchsticks series riddle?

With the help clues provided in the image, can you find the 5 digit key?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

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

Can you find the thief by just looking at the picture below?