goi so can tim la a
neu them chu so 3 vao cuoi thi a se la so le , ma a lai gap 2 lan so cu nen a la so chan
\(\Rightarrow\) a khong co gia tri
goi so can tim la a
neu them chu so 3 vao cuoi thi a se la so le , ma a lai gap 2 lan so cu nen a la so chan
\(\Rightarrow\) a khong co gia tri
tim mot so co 3 chu so biet rang khi viet them chu so 2 vao ben trai so do thi so moi gap so phai tim 9 lan
tim so co ba chu so biet rang neu viet them chu so 1 vao ben phai so do thi ta duoc mot so gap 3 lan so co duoc bang cach viet them chu so 2 vao ben trai so do
tim 1 so co 2 chu so biet rang them chu so 0 vao giua 2 chu so thi so do duoc mt so co 3 chu so gap 9 lan so ban dau
Tim mot so tu nhien co 5 chu so , biet rang neu viet them 2 chu so vao ben phai so do thi duoc so lon gap 3 lan so viet them chu so 2 vao ben trai so do .
tim mot so co 3 chu so , biet rang khi viet them chu so 3 vao ben trai so do ta duoc mot so gap 5 lan so can tim
tim mot so co 2 chu so biet rang khi viet them chu so 0 vao giua 2 chu so do thi duoc 1 so co 3 chu so gap 9 lan so ban dau
tim mot so tu nhien co 3 chu so biet rang neu viet them chu so 2 vao ben phai so do thi duoc so moi gap 17 lan so phai tim
tim 1 so co 2 chu so biet rang neu them vao chu so 0 vao giua hai chu so do thi duoc 1 so co 3 chu so gap 9 lan so ban dau
so do la
tim so co 3chu so biet rang khi viet them chu so 3 vao ben trai so do ta duoc so moi gap 5 lan so phai tim