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IMO Shortlist 1992 problem 13

1992 IMO shortlist tb
Find all integers \,a,b,c\, with \,1<a<b<c\, such that (a-1)(b-1)(c-1) is a divisor of abc-1.

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#NaslovOznakeRj.KvalitetaTežina
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1992 IMO shortlist tb
0
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1978 IMO shortlist tb
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1969 IMO shortlist tb
1
1241IMO Shortlist 1966 problem 58
1966 IMO shortlist
0
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1963 IMO shortlist
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1960 IMO shortlist
10