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1+11+111+...111...11(de 9 ori)=123456789

Răspuns :

Este corect
1 1 1 1 1 1 1 1 1 +
1 1 1 1 1 1 1 1 +
1 1 1 1 1 1 1 +
1 1 1 1 1 1 +
1 1 1 1 1 +
1 1 1 1 +
1 1 1 +
1 1
= 123 456 789