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:
“It is impossible to calculate the moral mischief, if I may so express it, that mental lying has produced in society. When a man has so far corrupted and prostituted the chastity of his mind as to subscribe his professional belief to things he does not believe he has prepared himself for the commission of every other crime.”
—Thomas Paine (1737–1809)
“—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)