I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

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?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Can you Find and name the hidden bird in the picture below ?

Be active and find the killer in the picture Riddle below.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Which alphabet is a part of our body?