Junior Regional Olympiad - FBH 2018 Grade 7 Problem 2
Source:
September 19, 2018
blackboardDigitsoriginal number
Problem Statement
On blackboard is written digit number so all three digits are distinct than zero. Out of it, we made three digit numbers by crossing out first digit of original number, crossing out second digit of original number and crossing out third digit of original number. Sum of those three numbers is . Which number is written on blackboard?