How can a man go eight days without sleep?

How many bananas can you eat if your stomach is empty?

Which alphabet letter is a question?

I am an odd number. Take away a letter and I become even. What number am I?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Who can jump higher than a Mountain?

What is always in front of you but can’t be seen?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you find the hidden animal in the picture below?

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 ?