Sunt 90 de numere de forma a0b. 100,101,102,103,104,105,106,107,108,109 dupa 200,201,202,203,204,205,206,207,208,209,300,301,302,303,304,305,306,307,308,309,400,401,402,403,404,405,406,407,408,409,500,501,502,503,504,505,506,507,508,509,600,601,602,603,604,605,606,607,608,609,700,701,702,703,704,705,706,706,608,709,800,801,802,803,804,805,806,807,808,809,900,901,902,903,904,905,906,907,908,909
