A box contains 12 marbles of three different colours: green, yellow and blue — 4 each. If you were to close your eyes and pick them at random, how many marbles must you take out to be sure that there are at least two of one colour among the marbles picked out?
Riddle AnswerLogic Riddles
Tallest Skyscraper
The world’s tallest skyscraper took seven years to build. Each year the workmen were able to double its height. How many years did it take for the skyscraper to reach half of its maximum height?
Riddle AnswerMr. Flynn’s Height
Brothers and Sisters
Julie says to her brother Pete: “I have as many sisters as brothers.”
“Yeah, well,” replies Pete: “I’ve got twice as many sisters as I have brothers.”
How many sisters and brothers are there?
Riddle AnswerPocket Money
You have unlimited supply of 1¢, 5¢, 10¢, 25¢ and 50¢ (penny, nickel, dime, quarter, half-dollar respectively) coins. What is the fewest number of coins required to have an exact change for all possible items that cost from one cent up to and including one dollar in one-cent increments?
Riddle Answer