A collector has a shelf of ancient coins. Half of the coins are gold, a quarter are silver, a sixth are bronze, and the remaining 3 are copper. How many total coins are on the shelf?
36 coins.
Fractions: 1/2 + 1/4 + 1/6 = 6/12 + 3/12 + 2/12 = 11/12 of the collection. The remaining fraction is 1/12, which equals 3 coins. Therefore, 3 * 12 = 36 total coins.
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: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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