Decode below three cipher riddles:

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

What always comes into a house through the keyhole?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Can it be possible to build a house that has all its four walls facing towards the South?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Which is heavier: a ton of bricks or a ton of feathers?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

The richest man in the city Mr Rechard is kidnapped. James Bond is appointed to the case. At the crime scene, a note is found written by Mr Richard. The note read:

"First of January, Fourth of October, Fifth of March, Third of June."

James Bond knew that somehow, the killer's name was hidden in the note. The following were the suspects:

Jack Richard, the son and the heir of property.
John Jacobson, the employee of Richard.
June Richard, the wife of Richard.

James Bond took only a few moments to deduce the killer's name. Can you tell who was the killer?

Solve this riddle by finding the odd one out from the rest.