Các câu hỏi tương tự
HInh tren la phep cong ma cac so trong phep tinh do deu duoc ma hoa boi cac chu cai. Biet rang cac chu so giong nhau duoc ma hoa boi cung mot chu cai, nguoc lai, cac chu so khac nhau duoc ma hoa boi cac chu cai khac nhau. Hoi chu X la ma hoa ua chu so nao? Cần gấp lắm đấy!
X+X+YY=ZZZ
Bach do Chien:
"do ban tim duoc so tron chuc lon hon 40.000 co cac chu so khac nhau ma tong cac chu so cua so do bang 10.Khi cong so do voi so viet theo thu tu nguoc lai thi duoc mot so co 5 chu so giong nhau.
Chien thach thuc:
-Neu tim duoc so do thi sao?
-Thi to cho cau di an kem tha cua chu sao.
nham mot lat,roi viet ngay hai so do ra giay.Chien than phuc roi dua ban di an kem.
cac ban cung thu suc nhe
ta viet cac so 3 chu so lien tiep nhau thanh mot day:
100101102103...cac chu so cua so chan duoc viet bang mau do,cac chu so cua so le duoc viet bang mau xanh. chu so 2012 la chu so
tu cac chu so 2 ; 4 ; 6
a, lap duoc bao nhieu so co 4 chu so?
b,lap duoc bao nhieu so co3 chu so ma cac chu so trong moi so khac nhau ?
giai theo cach lop 4
viet 18 so tu nhien lien tiep bat dau tu 1 roi xoa 19 chu so va giu nguyen thu tu cac chu so con lai de duoc so lon nhat ; so be nhat
tim mot so biet rang so docong voi so lon nhat co bon chu so roi cong tiep voi so be nhat co ba chu so giong nhau thi duoc so be nhat co nam chu so khac nhau
viet lien tiep cac so tu nhien 123567....de duoc 1so co 2012 chu so.Chu so hang don vi la bao nhieu
tim so tu nhien de khi them chung vao 2014 ta duoc cac so le co 4 chu so giong nhau.
tu cac chu so 1 , 2, 3, 5
a] lap duoc bao nhieu so co 4 chu so ma cac chu so trong moi so khac nhau ?
b]moi chu so xuat hien trong moi hang may lan ?
c} tinh tong cac so do theo cach hop li
ai nhanh nhat se duoc 4 like