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3digit number wanted, 4 hints May Olympiad (Olimpiada de Mayo) 2015 L1 P1

Source:

September 26, 2021
number theoryDigits

Problem Statement

The teacher secretly thought of a three-digit SS number. Students A,B,CA, B, C and DD tried to guess, saying, respectively, 541541, 837837, 291291 and 846846. The teacher told them, “Each of you got it right exactly one digit of SS and in the correct position ”. What is the number SS?
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