I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. 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?

I have teeth but i don't bite. Who Am I ?

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

Replace the question mark with the correct number.

What does this rebus puzzle means ?

Can you make a six-letter word using the letters N, A and B ?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

In the given picture, in how many ways can you read the word "Tiger"?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?