Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Which country gets ill every time?

Find the value of "?" in the ball picture Riddle below:

Take away the whole and some still remain. What is it?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Who has married many women but was never married?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Prove that twice of ten is the same as twice of eleven.