If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What can you hold in your right hand, but never in your left hand?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

What is the last thing you take off before bed?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?