hay viet tat ca cac so tu nhien co 3 chu so ma tong cua cac chu so bang 3
cho bon so 1,2,3,4
Viet tat ca cac so co 4 chu so khac nhau
Tinh tong cac so vua vietmot cach nhanh nhat
1.Cho cac chu so 0,3,2,1.Tinh tong tat ca cac so co 3 chu so khac nhau duoc viet tu cac chu so da cho
giup minh voi
1.Cho cac chu so 0,3,2,1.Tinh tong tat ca cac so co 3 chu so khac nhau duoc viet tu cac chu so da cho
giup minh voi
1.Cho 5 chu so 0;3;2;;1.Tinh to.ng tat ca cac so co 4 chu so khac nhau duoc viet tu cac chu so tren?Tinh tong cac so do
mong mn giup do
viet tat ca cac phan so co tong cua tu so va mau so la 12
a, Cho cac so : 3 ; 4 ; 5 viet tat ca cac so khac nhau co 3 chu so tren .
b, Tinh nhanh tong cac so vua lap .
c, Tim trung binh cong cua cac so vua lap.
Bai 1: cho day so 1,5,9,13,...
a) chu so thu 135 la chu so nao
b) tinh tong 200 so hang dau tien cua day
bai 2: 1/3,11/3,7,31/3,...
a) xac dinh so hang thu 2009 cua day da cho
b) trong 2009 so hang dau tien cua day co ? so tu nhien tinh tong tat ca cac so tu nhien do
cho 3 chu so 1,4,5.Hay viet tat ca cac so co3 chu so khac nhau tu 3 chu so do.Tinh tong cac so vua viet
