3 years ago

Aflati numerele de forma 5x2y devizibile cu 18

1 answer:

3 0

Un numar este divizibil cu 18, daca el este divizibil cu 2 si cu 9...ca sa fie divizibil cu 2 trebuie sa aiba ultima cifra para, iar ca sa fie divizibil cu 9, trebuie sa aiba suma cifrelor un multiplu de 9.

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