Why is 6 afraid of 7?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

You are trapped into a death trap by the famous jigsaw killer. As usual, a screen flashes in front of you and explains you the trap game. There are 100 pearls kept in a bowl in front of you and an empty bowl. Among the 100 pearls, 50 are white and 50 are black. You can divide them as you like into the two bowls. Once you are done, you will pull a lever, which will turn the room pitch black. The bowls will move and shuffle around. In the dark, you have to pick up one pearl from any bowl. Once you do that, the room will flood with lights again. If the peral you have in your hand is white, you will be allowed to live, but if the pearl you picked is black, the room will be filled with poisonous gas and you will die. How will divide the pearls to increase your chances of survival?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

What is the word or phrase below?
R | E | A | D

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag