Can you identify if it's a murder or a suicide ?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

What goes up but never comes down?

What do you answer even though it never asks you questions?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you find the mistake in the below statement?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?