cho so 65

a, hay viet them 2 chu so vao beb phai so 65 de dc so moi be nhat co 4 chu so cung chi het cho ca 3 va 5. so moi do la so nao?

b, Hay viet them 2 chu so vao ban trai so 65 de dc so moi lon nhat co 4 chu so cung chia het cho 5 va 9. so moi do la so nao?

Giup minh can gap , ai nhanh minh tick lun

nho viet ro loi giai nhe

so tu nhien lon nhat co ba chu so 6, 3, 0 moi chu so viet mot lan la so :

so tu nhien nho nhat co ba chu so 6, 3 ,0 moi chu so viet mot lan la so :

hieu giua chung la :

.......... - ........... = ..........

 HAY  VIET SO LON NHAT BANG CACH DUNG 3 CHU SO 1,2,3 VOI DIEU KIEN MOI CHU SO CHI DUOC DUNG 1 LAN VA CHI 1 LAN

hay viet so lon nhat bang cach dung ba chu so 1;2;3voi dieu kien moi chu so chi viet mot lan

viet so  nho nhat voi cung ca nam chu so 7;0;3,1,4 moi cu so chi viet 1 lan

voi 2 chu so la ma 1 va 5(so la ma) so la ma lon nhat co the viet dc
(moi chu so co the dung nhieu lan hoac ko dung)

co gia tri tuog ung trog he thap phan la

1.Cho so N la so co hai chu so chia het cho 3.Neu viet xen so 0 vao giua hai chu so do roi cong no voi hai lan chu so hang chuc cua so N ta duoc so moi gap 9 lan so N.Tim so do

2.Tong hai so thap phan la 60,1.Neu dich dau phay cua so nho sang ben phai mot hang roi dem tru di so lon thi ta duoc 219,52.Tim hai so do.

3.Tim so co hai chu so biet neu ta them so 33 vao giua hai chu so do thi duoc mot so moi gap so phai tim 89 lan.

voi hai chu so V ; I chu so la ma lon nhat co the viet duoc la

tinh hieu cua so tu nhien lon nhat va so tu nhien nho nhat deu gom bon chu so 5, 3,1,0 ( moi chu so viet 1 lan)