I make two people out of one. What am I?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

Which flower has two lips?

How many triangles are there in the picture below?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you count the number of lines in the below picture?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?