tim mot so tu nhien co hai chu so biet rang neu viet them mot chu so 2 vao ben trai va mot chu so hai vao ben phai so do thi ta duoc mot so lon gap 153 so ban dau

hai so 2^99 va 5^99 viet lien nhau tao thanh mot so hoi so do co bao nhieu chu so ?

tim mot so tu nhien co hai chu so biet neu viet them mot chu so 0 vao ben phai va mot chu so 1 vao ben trai so do thi ta duoc mot so moi bằng 50 lần số phải tìm

tim mot so tu nhien co hai chu so biet neu viet them mot chu so 0 vao ben phai va mot chu so 1 vao ben trai so do thi ta duoc so moi bang 50 la so phai tim

tim mot so co hai chu so biet rang neu viet them vao guia mot so co hai chu so kem SCT mot don vi thi dc mot so moi gap 91 lan SCT

TIM MOT SO TU NHIEN CO HAI CHU SO,NEU BIET,NEU VIET THEM CHU SO 0 VAO BEN PHAI SO PHAI TIM VA MOT CHU SO 1 CHU SO1 VAO BEN TRAI SO DO THI TA DUOC MOT SÔMI BANG50 LAN SO PHAI TIM

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 co hai chu so biet rang neu viet them vao giua so do mot so co hai chu so kem so phai tim 1 don vi thi duoc mot so moi gap 91 laan so phai tim tim hai so

tim so chia cua mot phep chia , biet rang : so bi chia 410, so du bang 19

a) tim mot so co hai chu so va neu lay so do chia cho chu so hang don vi thi duoc thuong la 8 va du 7

b) tong cua hai so bang 196 . tim hai so do

c)tim so co 3 chu so , biet rang neu viet them mot chu so 3 vao ben phai so do thi no tang them 2217 don vi