Trung binh cong cua hai so la 96. Neu bot so lon 12 don vi thi ta duoc so moi gap 3 lan so be. Tim so be
trung binh cong cua hai so la 60. Neu bot di o so lon 15 don vi thi ta duoc so moi gap 2 lan so be. Tim so be.
cho 2 so 10,91 va 7,04. tim so a, biet khi bot so 7,04 di a don vi va cong them a don vi vao so 10,91 thi ta duoc 2 so moi ma so lon gap 4 lan so be
tong cu 2 so bang 260 biet neu cung bot moi so di 6 don vi thi so lon se gap 3 lan so be tim so be
trung binh cong cua hai so la 60 . Neu bơt so lon di 15 don vi thi ta duoc so moi gap 2 lan so be.Tim so be?
cho hai so co ti so la 3/2.Neu gap so lon len 3 lan,gap so be len 2 lan thi sau khi gap duoc hai so moi co hieu bang 52,5.Tim so be
tim 2 so , biet rang so lon gap so be 12 lan va neu giam so lon di 4 lan va tang so be len 2 lan thi duoc 2 so moi co tong la 60 . tim 2 so
Tim hai so khi biet rang hieu cua hai so la 16.8 va neu them vao moi so 1.4 thi so lon gap 3 lan so be
TRA LOI CAU HOI SAU:
cau1:1/3 cua 186 bang
cau2:5/4cua 2012 bang
cau3:3/4 cua 192 bang
cau4:hieu hai so bang 246 so be bang 3/5 so lon vay so lon la
cau5:tong hai so bang 222 biet rang neu cung them moi so 9 don vi thi so lon gap doi so be tim so lon
cau6:cho hinh chu nhat co chu vi bang 104cm biet neu giam chieu dai di 2cm va tang chieu rong len 2cm thi no cho thanh hinh vuong so do chieu dai hinh chu nhat la
cau7:tong 2 so bang 260 biet neu cung bot moi so di 6 don vi thi so lon gap 3 lan so be vay so be la