There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

What two things can you never eat for breakfast?

Count the number of lines in the image below ?

Which alphabet letter is a question?

Can you decipher the below rebus?

PBLUESAISNUERSES

81 x 9 = 801. What must you do to make the this equation true?