tim 1 so biet rang neu viet them vao ben phai so do mot so co 2 chu so thi ta duoc so moi lon hon so can tim la 4554 so viet them la so nao

tim mot so co hai chu so biet rang neu viet them chu do 6 vao ben phai so do ta duoc so moi hon so phai tim la 132 don vi

Tim mot so co hai chu so biet rang neu viet them chu so 5 vao ben phaiso do ta duoc so moi lon hon so can tim 725 don vi

tim mot so tu nhien biet neu viet them mot chu so 0 vao tan cung ben phai so do ta duoc so moi hon so phai tim 2574 don vi . so do la 

tim so co ba chu so, biet rang neu viet them mot chu so 5 vao ben phai so do, ta duoc so moi lon hon so can tim 1130/

so do la..

tim mot so tu nhien co 3 chu so biet rang neu viet them chu so 7 vao ben phai so do thi duoc so moi hon so phai tim la 1222 don vi

cho mot so tu nhien neu viet them moy chu so vao ben phai so do ta duoc so moi hon so da cho la 2004 don vi tim chu so viet them

tim mot so co hai chu so biet rang neu viet them chu so 0 xen vao giua chu so hang chuc va hang don vi cua so do ta duoc so moi va neu viet them chu so hai vao ben trai so moi thi ta duoc mot so gap 6 lan so moi do

tim mot so tu nhien neu viet them mot chu so 3 vao ben phai so do ta duoc so moi hon so phai tim 930 don vi