tim so co nam chu so ma tong cua nam chu so do la 8 va chu so hang chuc nghin gap 3 lan chu so hang chuc

tim so co 5 chu so chu so hang chuc nghin gap 6 lan chu so hang tram va tong cac chu so do bang 7

tim so co 5 chu so co chu so hang chuc nghin gap 6 lan chu so hang tram va tang cac chu so cua so do bang 7

1.chu so hang chuc lon hon chu so hang don vi va tong 2 so bang 15 ? 2. Chu so hang don vi gap 9 lan chu so hang chuc va tong cua chung bang 10 ? 3. Chu so hang don vi chia het cho chu so hang chuc ?

Tim mot so chan co nam chu so khac nhau biet rang chu so hang chuc nghin gap ba lan chu so hang don vi chu so hang nghin gap 5 lan chu so hang chuc va chu so hang tram gap 4 lan chu so hang chuc .

tim mot so chan co nam chu so khac nhau ,biet rang chu so hang chuc nghin gap 3 lan chu so hang don vi,chu so hang nghin gap 5 lan chu so hang chucva chu so hang tram gap 4 lan chu so hang chuc

1 so tu nhien A co 4 chu so co chu so hang don vi lon hon 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.

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]

tim mot so co hai chu so biet rang so do gap 7 lan tong cua no va chu so hang chuc hon chu so hang don vi la 4