Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

what does this picture(rebus) riddle means ?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What is the next number in this series?

4,12,84,3612....

Why are televisions attracted to people?

What's the best place to go shopping in the ocean?

What goes up but never comes down?

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?