What is full of holes but still holds water?

Find out the number of circles in the given picture having Illusion

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

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?