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Cho hai so deu co hai chu so , tong cua hai so do bang 68 . neu ghep so be vao ben phai so lon va ghep so be vao ben trai so lon thi duoc hai so moi , hieu cua hai so moi bang 2178 tim hai so da cho
Tim mot so, biet rang neu viet them ben phai so do mot chu so 7 thi ta duoc so moi va tong cua so moi va so phai tim la 1074.
cho mot so biet rang neu viet them vao ben phai so do mot chu so thi duoc so moi va tong cua so moi va so phai tim la 467 tim so phai tim va chu so viet them
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Tim hai so do
biet tong cua hai so la 64, neu gap so thu nhat len 6 lan va so thu hai gap 4 lan thi duoc tong moi la 356. Tim hieu hai so do?
Tim mot so co ba chu so ,biet rang neu viet them chu so 2 vao ben trai so do thi duoc so moi ma tong cua so moi va so phai tim la 2254.
cho so co 2 chu so ma so lon bang 3 lan so be. neu dem so be viet them vao ben phai va ben trai so lon ta duoc hai so moi moi so 4 co 4 chu so. tong cua 2 so co 4 chu so do bang 4848. tim 2 so da cho
tim hai so co hieu bang hai tram muoi sau biet rang neu them mot chu so khong vao ben phai so be thi duoc so lonhieu cua hai so bang ba tram chin muoi ba biet rang neu xoa chu so cuoi cua so lon thi duoc so behien nay bo ba mot tuoi con bon tuoi .Hoi bao nhieu nam nua tuoi bo gap bon lan tuoi con
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giai nhanh giup minh nhe minh can rat rat gap
cho hai so co 2 chu so sao cho tong cua hai so do bang 78. neu ta dem so be ghep vao ben phai hoac ben trai so lon thi deu duoc so 4 chu so va hieu cua hai so co 4 chu so do la 594. tim 2 so