What is the next number in this series?

4,12,84,3612....

What word is represented by this rebus?

Keyboard words are not in alphabetical order, Why?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

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 do you get if you add 2 to 100 four times?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Make a sentence consisting of three words that have the whole alphabet.

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?