tim mot so co hai chu so, biet rang neu them chu so 0 vao giua hai chu so do thi ta duoc mot so co ba chu so gap 9 lan so ban dau.
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 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 mot so co hai chu so biet rang neu viet them chu so 3 vao ben trai so do ta duoc so moi [co 3 chu so } = 5 lan so phai tim
tim mot so co hai chu so biet rang neu viet them chu so 3 vao ben trai so do ta duoc so moi ( co ba chu so ) bang 5 lan so phai tim
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 3 chu so biet rang neu viet them chu so 2 xen chu so hang cham va chu so hang chuc duoc mot so moi gap 9 lan so can tim
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
1. Tim trung binh cong cua tat ca cac so tu nhien co 4 chu so khac nhau duoc viet boi bon chu so 0;3;5;7.Trung binh cong cua tat ca cac so do la?
2 .Tong cua 3 so bang 5,2. So thu nhat bang 2/3 so thu ba va so thu hai bang 50% so thu ba. Tim so thu hai?
3. Tim mot phan so co mau so bang 25 , biet rang neu cong tu so voi 34 va nhan mau so voi 3 thi duoc phan so moi bang phan so da cho. Tim phan so do?
4. Tim mot phan so biet rang neu cong them 4 vao tu so va giu nguyen mau so thi ta duoc phan so moi bang 1, con neu giu nguyen tu so va cong them 3 thi ta duoc phan so moi bang 1/2 .Tim phan so do?
5. Hay cho biet co tat ca bao nhieu so co 3 chu so ma tong co chu so cua moi so bang 4 . co tat ca bao nhieu so thoa man?