Can you find out who is the kidnapper in below Picture and why, Explain ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

There are three identical triplets sisters. Demi is the oldest of them all and she always speaks the truth. Diana is the next one who is a liar always. Drew, the youngest of them all speaks both truth and lies randomly.

On a rainy day, a family friend Victor visited them. Since there were starkly identical, he was not able to recognize them. Thus to clarify, he asked one question to each one of them.

He started with the one standing on the left and asked, 'Which sister is in the middle of you three?' She answered, 'That's Demi.'

Then, he asked the one standing in the middle, 'What is your name?' She answered, 'I am Drew.'

Finally, he asked the one standing on the right, 'Who is standing in the middle?' She answered, 'She is Diana.'

Victor was left baffled. He asked the questions three times and received different answers every time.

Can you tell who was who?

What part of Turkey has the most feathers?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

How many words can a pen with half refill write?

What can you catch but never throw?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?