Question

scrieti nr. naturale de forma 7xy divizibile cu 5 si 2.urgenttttt!!!!!!!!!!!!!

Answer 1

7xy|5,2 => y=0 =>7x0 este numarul care trebuie sa fie divizibil cu 5 si 2
7x0 => x={0.1.2.3.4.5.6.7.8.9} => numerele sunt: 700.710.720.730.740.750.760.770.780.790

Answer 2

[tex]\_\_\_\_\_\\ 7xy \\ Ca~sa~fie~divizibil~cu~5,~ultima~cifra~trebuie~sa~fie~0~sau~5: \\ x=\{0,1,2,....9\} \\ y=\{0,5\} \\ Numerele~sunt: \\ 700,705,710,715,720,725,730,735,740,745,750,755,760,765,770,775 \\ 780,785,790,795. \\ \\ \_\_\_\_\_\\ 7xy \\ Ca~sa~fie~divizibil~cu~2,~ultima~cifra~trebuie~sa~fie~para: \\ x=\{0,1,2,....9\} \\ y=\{0,2,...8\} \\ Numerele~sunt: \\ 700,702,704,706,708,710,712,714,716,718,720,722,724,726,728[/tex][tex]730,732,734,736,738,740,742,744,746,748,750,752,754,756 \\ 758,760,762,764,766,768,770,772,774,776,778,780,782,784 \\ 786,788,790,792,794,796,798[/tex]

[tex]Din~ele,~selectezi~care~se~impart~la~ambele,~adica~cele~pare~si~cu~0 \\ la~sfarsit: \\ 700,710,720,730,740,750,760,770,780,790[/tex]