cho 2 so co tong bang 23972 biet so be la so co 4 chu so va neu viet them chu so 2 vao truoc so be ta duoc so lon .tim so be
cau 1 ;2 so co tong la 346 biet so be la so co hai chu so va khi viet them chu so 3 vao truoc so be thi duoc so lon tim so be
cau 2 ; tong 2 so la 390 so be l¸o co 2 chu so va neu viet them chu so 3 vao truoc so be thi duoc so lon tim so lon
cau3;chu vi 1 khu dat hinh chu nhat =68 chieu dai hon chieu rong16m nguoi ta trong rau tren khu dat do TB cu 2m vuong trong duoc 2 kg rau tinh so rau o khu dat do
cau4 ; TBCcua 2 so la so nho nhat co 3chu so khac nhau biet so lon lon hon TBCcua 2so la 24 don vi tim so be va so lon
Tong cua hai so la 472 va biet viet them chu so 4 vao dang truoc so be thi ta duoc so lon. Tim hai so do.
1.tim 1 so biet neu viet them vao ben phai so do co 1 chu so 6 thi ta duoc 1 so moi hon so da cho la 888 don vi
2.cho 1 so co 2 chu so biet neu viet them 1 chu so n vao ca dang truoc va dang sau so do thi ta duoc 1 so moi co 4 chu so . So moi gap 21 lan so da cho . Tim so da cho va so n viet them
tong cua hai so bang 440 neu viet them chu so 4 vao ben trai so be thi duoc so lon. tim hai so do biet so be la mot so co 2 chu so.
tong cua hai so bang 440 neu viet them chu so 4 vao ben trai so be thi duoc so lon. tim hai so do biet so be la mot so co 2 chu so.
tong cua hai so bang bon trambon muoi sau neu viet them chu so 4 vao ben trai so be thi duoc so lon. tim hai so do biet so be la mot so co 2 chu so.
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
tong la 174 viet them chu so 1 vao truoc so be thi duoc so lon tim so be, tim so lon