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?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

Why did the Girl throw the butter out of the window?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Which is faster, Heat or Cold ? Explain.