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La numerotarea paginilor unei carti cifra 2 a fost folosita de 45 de ori. Cate pag are cartea?

 



Răspuns :

2,12,20,21,22,23,24,25,26,24,28,29,32,42,52,62,72,82,92,102,112,120,121,122,123,124,125,126,127,128,129,132,142,152,162,172,182,192,200,201,202,203,204,205,206
RASPUNS: 206 PAGINI