This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

What Time Should the last watch show in the below figure?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

What number divided by 4 is the same as that number minus 4?

Why do you find that most of the buildings are deprived of the 13th floor?

They are three errirs in this question. Can you find them?