An artist creates a mural composed of alternating red and blue tiles in a straight line. There are 25 tiles in total. The first tile is red and the last tile is red. How many blue tiles are in the mural?
12
Since there are 25 tiles total, and it starts and ends with red, there must be 13 red tiles (odd positions 1, 3, 5... 25). The remaining tiles are blue, which is 25 - 13 = 12.
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.
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