Absent-minded Ziggy has forgotten the combination to his wall-safe that contains the family jewels… he remembers the five different numbers involved, but can't quite recall the order they go in. He tries 3 different combinations, none of which work:
a) 7-2-1-8-3
b) 2-7-3-1-8
c) 1-3-8-2-7
IF it is given that in the first and second guesses (a and b) only one number is in the correct order (in each attempt), and in the third guess three numbers are in the correct places, then what must be the proper combination to open the safe?
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ANSWER:
1-7-8-2-3
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