I grow when fed, but I die when given water. What am I?
Fire
Fire grows larger when given fuel (fed), but is extinguished (dies) when water is added.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
More logic riddles
An ancient vault requires a four-digit numerical code. - The sum of all four digits is 10. - The first digit is twice the third digit. - The second digit is zero. - The last digit is odd and greater than 5. What is the four-digit code?
A train travels from City A to City B at an average speed of 60 miles per hour. On the return trip from City B to City A along the exact same track, it travels at an average speed of 40 miles per hour. What is the train's average speed for the entire round trip?
A line goes: pencil, book, pencil, book, pencil. What comes next?
Four delivery drones—Alpha, Beta, Gamma, and Delta—landed in a straight line. Delta landed directly behind Alpha. Gamma landed somewhere ahead of Beta, but strictly behind Delta. Which drone landed in the very middle of the line?
You stand before two doors. One leads to certain doom, and the other leads to freedom. Two guards stand beside them: one always tells the truth, and the other always lies. You do not know which guard is which, nor which door is which. You are permitted to ask just one guard a single yes-or-no question. What question do you ask to guarantee your freedom?
A line goes: egg, rabbit, egg, rabbit, egg. What comes next?

