nguoi ta co the viet cac so la :
khong the dung ê 3 la hang chuc duoc
ta bat dau tu 7:
73 , 79
den 9 :
93,97
vay ta co the viet tat ca so so hang khac nhau ma lon hon 45 la :4 so
ban co doc nhe chu minh go tieng viet khong hieu dau
Bài 1:
Tu cac chu so 3,4 va 6 Lan da viet tat ca cac so co 3 chu so khac nhau .Hoi Lan da viet duoc bao nhieu chu so ?
Bài 2:
Đe danh so trang cua mot cuon sach day 48 trang can bao nhieu chu so ?
Bài 3:
Biet thua so thu nhat la 1 so co 4 chu so . tim chu so hang nghin cua thua so thu nhat
Bài 4:
viet so chan be nhat co 4 chu so khac nhau ma tong cac chu so la 15
Bài 5:
viet so le lon nhat co 4 chu so va co tong cac chu so bang 15
tim so tu nhien co 4 chu so khac nhau lon hon 3142 ma co tong cac chu so bang 6 va chu so hang chuc be hon chu so hang don vi
so tu nhien lon nhat co ba chu so khac nhau la so bao nhieu
cho cac 1; 2; 3 viet duoc tat ca bao nhieu so co ba chu so khac nhau
cho 3 chu so 1,2,4 viet duoc tat ca bao nhieu so chan co 3 chu so khac nhau tu 3 chu so da cho
BAI5 VIET SO LON NHAT CO BON CHU SO MA TONG CAC CHU SO BANG 9, HIEU CHU SO HANG DON VI VA HANG NGHIN LA 5
BAI 5 VIET CAC SO CO 4 CHU SO, BIET MO SO DUNG SAU HON CHU SO DUNG TRUOC 2 DON VI(VI DU :1357)VA SAP SAP CHUNG THEO THU TU TANG DAN.
cho 3 chu so 2 4 8 hay viet tat ca cac so co 3 chu so khac nhau tu 3 chu so da cho
Tu cac so 2 , 4 , 6 , 9 co the viet duoc bao nhieu so co 3 chu so
hay cho biet co tat ca bao nhieu so co 3 chu so ma cac chu so cua nhung so do deu lon hon 4
