Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

A sundial has the fewest moving parts of any timepiece. Which has the most?

what's the probability of getting a king or a queen from a pack of 52 cards?

Find the next number in the series below

21 32 54 87 131 ?

What is red and smells like blue paint?

Edward James went for tiger hunting.

It was not his lucky day.



He got six tigers without heads, nine tigers without the tail and eight cut in two halves.

How many tiger did he hunted ?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

How many times can you subtract the number 5 from 25?

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?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain