Nếu bỏ chữ số hàng chục thì có 31;62;93
Vay co : 321;351;381;612;642;672;903;933;963;993
Vay co 10 so
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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
Co tat ca bao nhieu so co 3chu so chia het cho 3 ma chu so hang tram gap 3 lan chu so hang don vi........................
co bao nhieu so co 3 chu so chia het cho 3 ma chu so hang tram gap 3 lan chu so hang chuc
co tat ca ca bao nhieu chu so chia het cho 3 ma cs hang tram gap ba hàng đơn vi
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!
tim mot so tu nhien co 3 chu so ma chu so hang chuc bang 1/3 chu so hang tram va gap 3 lan chu so hang don vi
hay cho biet co tat ca bao nhieu so co 3 chu so ma chu so hang don vi bang 7
hay cho biet co tat ca bao nhieu so co 3 chu so ma chu so hang don vi cua no bang 7
co tat ca bao nhieu so co 3 chu so ma chu so hang don vi cua cac so do la 7