Scrie toate numerele care:
a) au aceeaşi cifră la sute şi la zeci şi sunt numere impare;
b) au cifra sutelor cu o unitate mai mare decât cifra zecilor şi sunt
numere pare;
c) au suma celor trei cifre egală cu 5.
Răspunsuri la întrebare
Răspuns:
a) 111, 113, 115, 117, 119, 221, 223, 225, 227, 229, 331, 333, 335, 337, 339, 441, 443, 445, 447, 449, 551, 553, 555, 557, 559, 661, 663, 665, 667, 669, 771, 773, 775, 777, 779, 881, 883, 885, 887, 889, 991, 993, 995, 997, 999
b) 211, 213, 215, 217, 219, 321, 323, 325, 327, 329, 431, 433, 435, 437, 439, 541, 543, 545, 547, 549, 651, 653, 655, 657, 659, 761, 763, 765, 767, 769, 871, 873, 875, 877, 879, 981, 983, 985, 987, 989
c) 104, 113, 122, 131, 140, 203, 212, 221, 230, 302, 311, 320, 401, 410, 500
Răspuns:
a)111,113,115,117,119,221,223,225,227,229,331,333,335,337,339,551,441,443,445,447,449,553,555,557,559,661,663,665,667,669,771,773,775,777,779,881,883,885,887,889,991, 993,995,997,999.
b)210,212,214,216,218,320,322,324,326,328,430,432,434,436,438,540,542,544,546,548,650,652,654,656,658,760,762,764,766,768,870,872,874,876,878,980,980,984,986, 988
c) 104,113,122,131,140,203,212,221,302,311,320,401,500