Originally Posted by iamgine
A riddle for those who cannot sleep...
Ann is thinking of a number between ten and a thousand.
Bob is trying to guess the number
Bob: "Is it less than five hundred?"
Ann answered, but she lied.
Bob: "Is it a square number?"
Ann lied again
Bob: "Is it a cube number?"
Ann answer truthfully this time
Bob: "All right I got two answers, the number you are thinking of must be one of them"
What is the number Ann was thinking of?
Aren't we missing the Yes or No answers Ann gave to Bob here??