Răspuns :
cifra 4:
4, 14, 24, 34, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49
cifra 3:
3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 43
cifra 9:
9, 19, 29, 39, 49
* cifra 4 se foloseste in numerotarea paginilor : 4, 14, 24, 34, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49...... de .......15 ori.
* cifra 3 se foloseste in numerotarea paginilor : 3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 43...... de .......15 ori.
* cifra 9 se foloseste in numerotarea paginilor : 9, 19, 29, 39, 49...... de .......5 ori.
* cifra 3 se foloseste in numerotarea paginilor : 3, 13, 23, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 43...... de .......15 ori.
* cifra 9 se foloseste in numerotarea paginilor : 9, 19, 29, 39, 49...... de .......5 ori.