tim mot so co 4 chu so biet rang khi viet them chu so 3 vao ben trai so do thi duoc so moi gap 7 lan so phai tim
tim mot so co bon chu so biet rang khi viet them chu so 3 vao ben trai so do thi duoc so moi gap 9 lan so phai tim
tim so co hai chu so biet rang khi viet them so 2 vao ben trai so do thi duoc so moi gap 9 lan so phai tim
tim so co hai chu so biet rang khi viet them chu so 2 vao ben trai so do thi duoc so moi gap 9 lan so phai tim
tim so co hai chu so , biet rang khi viet them chu so 2 vao ben trai so do ta duoc so moi gap 9 lan so da cho
tim so co bon chu so;biet rang khi viet them chu so 2 vao ben phai so do thi duoc so moi co nam chu so hon so phai tim 11306 don vi
Tim so co hai chu so. biet rang neu viet them chu so 2 vao ben trai so do ta duoc so moi gap 5 lan so ban dau
tim 1 so co bon chu so,biet rang khi viet them chu so 3 vao chu so do thi so moi gap len 9 lan?
tim so co 4 chu so biet them 2 chu so vao ben trai thi so moi gap 6 lan so ban dau