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Mathematics, 23.07.2019 19:30 lilianamichelle41

1) elevii unei clase au schimbat intre ei fotografii , astfel ca fiecare elev a primit cate o fotografie de la toti colegii sai. aratati ca numarul de fotografii este par. creterii de divibilitate cu 2,5 si 10^n 2) fie numerele 42,688,32,15,126,1114,71,3012,455,1 25,112,60,14,751,10,20,45,300,126,5 00,520,1700,430. scrieti numerele care sunt divizibile cu . a)2 b)5 c)10 3) care este cel mai mare numar natural de patru cifre diferite divizibile cu 2? dar cu 5? dar cu 2 si 5 ? urgent

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