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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 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 stn co 4 c/s .biet rang khi viet them c/s 5 vao ben phai so do ta duoc 1 so gap 5 lan so nhan duoc khi viet them c/s 1 vao ben trai so can tim
tim 1 so co 2 chu so biet rang neu viet them vao ben trai ben phai so do 1 chu so 5 ta duoc 1 so moi co 4 chu so gap 75 lan so phai tim
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
Tim mot so co hai chu so biet rang khi viet them so 21 vao ben trai so do ta duoc mot so lon gap 31 lan so can tim
tim so co 3 chu so biet rang khi viet them chu so 7 vao ben phai so do ta duoc so be hon khi viet them chu so 7 vao ben trai la 5778 don vi
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 1 so tu nhien co 2 chu so , biet rang neu viet them 1 chu so 4 vao ben trai so do thi ta duoc so moi lon hon gap 26 lan so ban dau.