Question

Stabiliti cate numere de 3 cifre au exact 2 cifre egale

Answer 1

Nr sunt:100,122,133,144,155,166,177,188,199
            200,211,233,244,255,266,277,288,299
            300,311,322,344,355,366,377,388,399
            400,411,422,433,455,466,477,488,499
             500,511,522,533,544,566,577,588,599
            600,611,622,633,644,655,677,688,699
            700,711,722,733,744,755,766,788,799
            800,811,822,833,844,855,866,877,899
            900,911,922,933,944,955,966,977,988
       
           110,112,113,114,115,116,117,118,119
           220,221,223,224,225,226,227,228,229
           330,311,322,344,355,366,377,388,399
           440,441,422,443,445,446,447,448,449
           550,551,552,553,554,556,557,558,559
           660,661,662,663,664,665,667,668,669
           770,771,772,773,774,775,776,778,779
           880,881,882,883,884,885,886,887,889
           990,991,992,993,994,995,996,997,998

Answer 2

Sunt 171 de numere de 3 cifre care au exact 2 cifre egale .