An ancient vault requires a security key containing a four-digit PIN. The digits are all different. The product of the first and fourth digits is 12. The product of the second and third digits is 24. The third digit is greater than the fourth digit. What is the correct PIN?
6382
1st digit (6) times 4th digit (2) equals 12. 2nd digit (3) times 3rd digit (8) equals 24. The 3rd digit (8) is greater than the 4th digit (2), and all four digits (6, 3, 8, 2) are unique.
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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