co tat ca bao nhieu so ma tong cac chu so bang 8
chi can 10 so ma thoi
Mot can phong hinh chu nhat co chu vi bang 40m. Chieu dai hon chieu rong 4m. Trung binh co 1m nen nha can 10 vien gach hoa de lat . Gia 1 vien gach la 12500 dong . Hoi .
a) Phai dung bao nhieu vien gach hoa de lat kin nen.
b) Tong so tien de lat can phong biet tien cong tho la 200000 dong.
chu tho can cat cac tam ton hinh chu nhat co kich thuoc 2,4m nhan 0,9m thanh cac manh ton hinh chu nhat co kich thuoc 0.6m nhan 0.3m de go thanh cac hop dung phu tung xe may a
a em chi giup chu cach cat nhu the nao de tiet kuem nhat nhe [khong phai bo di mieng ton nao ]
b neu moi hop can 5 manh ton thi can cat bao nhieu tam ton de du go 120 hop dung phu tung /
cho dãy số:0,1;0,01;0,001
a}so hang thu 1000 co bao nhieu chu so 0?
b}de viet tu so hang thu nhat den so hang thu100 phai dung bao nhieu chu so 1,0
co bao nhieu so co 3 chu so co tong cac chu so bang 53
co bao nhieu so co 3 chu so co tong cac chu so bang 5
moi so duoc viet bang 2015 chu so 6 . hoi phai cong vao so do it nhat bao nhieu don vi de duoc mot so chia het cho 28
co bao nhieu chu so co 4 chu so ma tong cac chu so bang 21 ?
1 QUYEN SAcH CO 280 TRANG .hoi de danh so thu tu cac trang cua quyen sach do ta can phai dung bao nhieu cac chu so