Tim mot so chan co nam chu so khac nhau biet rang chu so hang chuc nghin gap ba lan chu so hang don vi chu so hang nghin gap 5 lan chu so hang chuc va chu so hang tram gap 4 lan chu so hang chuc .

tim mot so chan co nam chu so khac nhau ,biet rang chu so hang chuc nghin gap 3 lan chu so hang don vi,chu so hang nghin gap 5 lan chu so hang chucva chu so hang tram gap 4 lan chu so hang chuc

tim so le co 4 chu so biet tong cac chu so do bang 26 tich cac chu so cua so do la so tron chuc va gia tricua so do ko thay doi khi doi cho chu so hang nghin cho chu so hang chuc chu so hang tram cho chu so hang don vi

                   giai giup minh nhe////co va loi giai luonne.......cam o

tim so co 4 chu so chia het cho 2,3 va 5 biet rang khi doi cho cac chu so hang don vi voi hang tram hoac hang chuc voi hang nghin thi so do khong thay doi

Bai 1:Cho so tu nhien A co 4 chu so. Co chu so hang don vi gap 3 lan chu so hang tram chu so hang chuc gap 8 lan chu so hang nghin. Biet A chia het cho 9.Tim A

Bai 2: Tim tat ca cac so dang 6x14y. Biet rang so do chia het cho 3,4 va 5

tinh hieu cua so lon nhat co 6 chu so khac nhau va be nhat co 6 chu khac nhau

viet so be nhat co 6 chu so hang nghin la 8 chu so hang chuc la 5

tim scp co 4 chu so , biet rang cac chu so hang tram hang nghin hang chuc hang don vi theo thu tu do lam thanh 4 stn lien tiep tang dan

viet 1 so co 5 chu so khac nhau biet chu so hang nghin gap 3 lan hang chuc, hang tram bang 1/4 hang don vi

a la so can tim co 5 chu so .chu so hang chuc nghin hon kem hang nghin la 6 don vi. chu so hang don vi bang 1/3 chu so hang nghin