Impossible Puzzle
The Impossible Puzzle, also named Sum and Product Puzzle is a puzzle called "impossible" because it seems to lack sufficient information for a solution. It was first published in 1969, and the name Impossible Puzzle was coined by Martin Gardner. The puzzle is solvable, though not easily. There exist many similar versions of puzzles.
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Famous quotes containing the words impossible and/or puzzle:
“Is it impossible not to wonder why a movement which professes concern for the fate of all women has dealt so unkindly, contemptuously, so destructively, with so significant a portion of its sisterhood. Can it be that those who would reorder society perceive as the greater threat not the chauvinism of men or the pernicious attitudes of our culture, but rather the impulse to mother within women themselves?”
—Elaine Heffner (20th century)
“—My good friend, quoth I—as sure as I am I—and you are you
—And who are you? said he.—Don’t puzzle me; said I.”
—Laurence Sterne (1713–1768)