So co 4 chu so là các so tu nhiên tu 1000.......9999
Vay so tu nhien co 4 chu so co tat ca la
(9999 - 1000) + 1 = 9000 so
ta có 9999-1000=8999 nha bạn
duyệt đi
co may so co 4 chu so
Co the viet đuợc tat ca may so co nam chu so ma trong moi so do co ba chu so 1 va hai chu số 0 ?
Co may so co 2 chu so chia het cho 3
voi 4 so 0954 hoi lap duoc may so co 3 chu so chia het cho 2
mot co nhan vien danh may lien tuc day so chan bat dau tu 2 nhu sau:2,4,6,8,...Co phai danh 2016 chu so. tim chu so cuoi cung co danh
Viet so co 3 chu so co hang chuc gap 2 lan hang don vi ,hang tram gap 3 lan hang chuc . Co may so
7777 la so co may chu so 0
cho mot so co ba chu so ma chu so hang tram la 4.neu xoa bo chu so 4 nay di,ta duoc mot so co hai chu so.biet tong cua so co ba chu soda cho vaso co hai chu soco duoc sau khi xoa chu so 4la 450.tim so co ba chu so da cho ban dau.
so lon nhat co 10 000 chu so la may
