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so lon la 30: 30 x100=100
so lon bang so % so be la 100:30x100=333,33%
dap so :100
333,33%
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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
Ton cua hai so bang 2009 biet 1/2so lon bang 2/3so be vay so lon la bao nhieu
tim 2 so biet tong cua chung bang 340 va biet so lon chia cho so be duoc thuong bang 3 va khong du. tim so lon va so be
cho 2 so biet so be bang 40 % tong 2 so
vay ti so % giua lon va be la
hai so tu nhien co hieu bang 133.tim so lon biet khi lay so lon chia cho so be thi duoc thuong la 4 va so du la 19
Hieu 2 so bang 9,5 biet 30% so lon thi bang 40% so be. Tim so lon?
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tim hai so biet rang hieu cua so lon va so be bang thuong cua so lon va so be va bang 0,75