Số đó là 1001 viết từ 3 số nguyên liên tiếp : 7.11.13
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Tim so tu nhien co 4 chu so . Chu so hang nghin bang chu so hang don vi . Chu so hang tram bang chu so hang chuc va so do duoc viet dang tih cua 3 so nguyen to lien tiep
Giup mk nhe ! Mk kb
1. Tim tat ca cac so co 2 chu so sao cho moi so gap 2 lan tich cua no?
2. Tim so nguyen to co 3 chu so biet rang neu viet so do theo thu tu nguoc lai thi ta duc 1 so la lap phuong cua 1 so tu nhien?
3. Tim so tu nhien co 4 chu so biey chu so hang nghin bang chu so hang don vi chu so hang tram bang chu so hang chuc va so do viet duoc duoi dang tich cua 3 so nguyen to lien tiep?
tim so tu nhien co 4 chu so biet rang hang nghin bang hang don vi, chu so hang chuc bang chu so hang tramva duoc viet duoi dang tich cua 3 so nguyen to lien tiep
tim so tu nhien co 4 chu so biet rang so nay chia 3 du 2, cac chu so hang ngan,hang chuc, hang tram, hang don vi lan luot la la cac so tu nhien lien tiep tang dan va trong 4 chu so do khong co chu so nao bang 7
viet tap hop cua cac so tu nhien co 2 chu so trong do
a chu so hang chuc nho hon chu so hang don vi la 5
b chu so hang chuc gap bon lan chu so hang don vi
c chu so hang chuc nho hon chu so hang don vi tong hai so do bang 14
ai giup mk thi se kb nha
1.tim 2 so tu nhien co hieu bang 2002 va tich bang 2006.
2.cho 100 so tu nhien 1,2,3,4,....100.
co the chon duoc 71 so tu nhien sao cho tong cua chung bang tong cua 29 so con lai khong
3.mot so chan co 4 chu so , trong do so tao boi chu so hang tram va hang chuc gap 3 lan chu so hang nghin va gap 2 lan chu so hang don vi .
[CAC BAN GHI LOI GIAI GIUP MINH NHE MINH CAM ON]
co bao nhieu so tu nhien co 2 chu so trong do chu so hang chuc nho hon chu so hang don vi va tong cua 2 chu so do bang 14.
cho mot so co ba chu so biet rang tong cac chu so hang tram va hang don vi bang chu so hang chuc. CMR so do chia het cho 11
tim tat cac so tu nhien co ba chu so thoan man cac tinh chat sau : co tong cac chu so bang 9 chu so hang chuc lom hon chu so hang don vi la 2 don vi va neu ta doi chu so hang tram cho hang don vi thi duoc so moi lon hon so ban dau la 198 don vi