A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

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?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

What has many keys but can’t open a single lock?

I don't get anymore wetter, no matter how much rain falls on me.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.