In a puzzle system, shapes represent numbers: Triangle + Triangle = Square, and Square + Triangle = 6. What number does Triangle represent?
2
Since Square equals two Triangles, substitute Square in the second equation: 2 Triangles + 1 Triangle = 6, meaning 3 Triangles = 6, so Triangle = 2.
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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