What you cannot hold but it is yours?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

I can write cow in 13 letters.

Can You?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Can you decipher the below rebus?

PBLUESAISNUERSES

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?