To each his own mania - Lycée Arago (Perpignan)

Établissement
Lycée Arago (Perpignan)
Année
2017-2018
Résumé
You are fond of counting, it is almost a mania. When you see a number, you add its digits up and, if this sum divides the number you started with, you feel good! How often does it happen?
Mots clés
Type de présentation au congrès
Exposé