When James was nine years old he hammered a nail into a tree to mark his height. Ten years later, James returned to see how much higher the nail was. If the tree grew by four inches each year, how much higher would the nail be?
Riddle AnswerHard Riddles
Ping Pong Ball in a Hole
A ping pong ball fell down into a narrow metal pipe embedded in concrete one foot deep. You have a table tennis racket (bat or paddle), a pair of shoe laces and a large unopened water bottle, which does not fit into the pipe. How can you get the ping pong ball out of the pipe undamaged?
Riddle Answer5 to 2 Squares Matchstick Puzzle
There are five squares formed by 12 matchsticks as shown in the figure. Can you remove just two matchsticks so that only two squares remain?
Probability Other Child Is a Boy
Mr. Smith has two children. If the older child is a boy, what is the probability that the other child is also a boy?
Riddle AnswerThe Length of One Shoelace
The length of one shoelace is 20cm and half a shoelace.
What is the length of 2 such shoelaces?
Riddle Answer