Tim STN co 2 chu so,biet so do gap 6 lan tich cac chu so cua no?giup minh voi
 

Tím một STN co 3 chu so biet so do gap 5 lan tich cac chu so cua no

tim so co 3 chu so biet so do gap 5 lan tich cac chu so cua no

tim so tu nhien co 3 C/S,biet rang binh phuong cua C/S hang chuc bang tich cua 2 C/S kia va so tu nhien do tru di so gom 3 C/S ay viet theo thu tu nguoc lai bang 495

tim so co 2 chu so biet rang neu lay tong cac chu so cong voi tich cac chu so cua so do thi bang chinh no.

 1. Tim tat ca cac so co 2 chu so sao cho moi so gap 2 lan tich cua no?

2. Tim so nguyen to co 3 chu so biet rang neu viet so do theo thu tu nguoc lai thi ta duc 1 so la lap phuong cua 1 so tu nhien?

3. Tim so tu nhien co 4 chu so biey chu so hang nghin bang chu so hang don vi chu so hang tram bang chu so hang chuc va so do viet duoc duoi dang tich cua 3 so nguyen to lien tiep?

tim so co 2 chu so biet 3 lan so do  bang binh phuong 1 tong cac chu so cua so do va bang 4 lan tong cac chu so  do

hay tim so co 3 chu so biet rang so do gap 3 lan tich cac chu so cua no!!!

 aj giup mk vs dua ra cach lm nhan ;(

tim so tunhien co 2 chu so biet rang so do gap doi tich cac chu so cua no.