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Bai 4
Viet tat ca cac so co 3 chu so ma chu so hang tram va chu so hang don vi deu = 1
111 ,121 ,131 ,141 ,151 ,161 ,171 ,181 ,191
bai 4 viet tat ca cac so co ba chu so ma chu so hang tram va chu so hang don vi deu bang 1 :
Các số:101,111,121,131,141,151,161,171,181,191
101;121;131;141;151;161;171;181;191
hay viet tat ca cac so co 3 chu so .Co chu so hang tram hon chu so hang chucla 2 va bang nua chu so hang don vi
Ban An phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu = 12, dong thoi chu so hang don vi = trung cong cua chu so hang tram va hang chuc. Hoi ban An tim duoc nhieu nhat may so thoa man yeu cau?
Bai 1:Cho so tu nhien A co 4 chu so. Co chu so hang don vi gap 3 lan chu so hang tram chu so hang chuc gap 8 lan chu so hang nghin. Biet A chia het cho 9.Tim A
Bai 2: Tim tat ca cac so dang 6x14y. Biet rang so do chia het cho 3,4 va 5
ban an phai tim tat ca cac so co 3 chu so lon hon 500 ma tong cac chu so cua moi so do deu bang 12 dong thoi chu so hang don vi bang trung binh cong cua chu so hang tram va hyang chuc hoi ban an tim duoc nhieu nhat bao nhieu so thoa man yeu cau
tim tat ca cac so co 4 chu so trong do chu so hang tram va chu so hang chuc theo thu tu lap thanh mot so gap 3 lan chu so hang nghin va gap 2 lan chu so hang don vi
cac ban nho neu ca cach lam nha! cam on!
viet tat ca cac so co hai chu co tong cua chu so hang chuc va chu so hang don vi la 8
17;71;26;62;35;53;44;80
BAI5 VIET SO LON NHAT CO BON CHU SO MA TONG CAC CHU SO BANG 9, HIEU CHU SO HANG DON VI VA HANG NGHIN LA 5
BAI 5 VIET CAC SO CO 4 CHU SO, BIET MO SO DUNG SAU HON CHU SO DUNG TRUOC 2 DON VI(VI DU :1357)VA SAP SAP CHUNG THEO THU TU TANG DAN.
Co tat ca bao nhieu chu so co 3 chu so .Chia het cho 3 ma chu so hang tram gap 3 lan chu so hang don vi
là 10 nha bn!
cho mik đi
cac ban nho giai ra nha va kb voi minh z
111 ,121 ,131 ,141 ,151 ,161 ,171 ,181 ,191