@@Sun-cf9bu 完整嘅題目係咁樣嘅： The length and the width of a rectangular paper are measured as 30 cm and 20 cm respectively, where the measurements are correct to the nearest cm. The paper is cut into n identical squares such that the side lengths of the squares are measured as 4 cm correct to the nearest cm. Find the greatest and the least possible values of n. "cut into n identical squares" 係應該imply唔會剩低任何紙張，正如平時做volume題目"melted and recast into"都係imply唔會剩低 搵最大嘅n嘅時候，大長方形可以係 30.12 cm x 20.08 cm，小正方形就係 2.51 cm x 2.51 cm，咁就啱啱好96個 搵最小嘅n嘅時候，大長方形可以係 29.7 cm x 19.8 cm，小正方形就係 3.3 cm x 3.3 cm，咁就啱啱好54個 p.s. 呢個討論其實一直存在，只係我比較相信題目嘅意思係「無紙張剩低」，亦都知道唔少人係採取你嘅諗法，所以公開試喺呢種題型都係避重就輕，淨係問greatest possible value，無問過least possible value，所以我諗唔係需要太擔心的！
13:22 最細應該係9，所以least value of n 係 6×9 = 54，講錯了sorry!!
都係唔明，N width 同n length,係你題解入面係指大長方形同小長方形對應比率，比率的確大過8.429係啱嘅，但如果比率唔夠9（例如8.8）咁咪分唔到9個？如果長方形的真實長為29.6，小長方形真實長為3.4，29.6/3.4=8.705，唔夠9個，最小值應該係8？所以大長方形的長可以只包含8個小長方形嘅長？
同理闊嗰邊唔夠6嘅情況係當5嚟計？
@@Sun-cf9bu 如果大長方形嘅長度係29.7cm，小正方形嘅長度係3.3cm，就可以分到29.7/3.3 = 9個
反而如果需要分8個，假設大長方形嘅長度係29.5cm，小正方形嘅長度就要係3.6875cm，但小正方形嘅長度必須小於3.5cm，所以無辦法分到8個
希望幫到你🙏🙏
需要分8個應該唔洗大長方形邊長啱啱好係8個小長形邊？只要突出嚟嘅部分唔夠一個小長方形都會當8個嚟計？咁如果理論上分到8.705個，實際上咪只可以round down變成分到8個？都可以話佢只分到8個？
@@Sun-cf9bu 完整嘅題目係咁樣嘅：
The length and the width of a rectangular paper are measured as 30 cm and 20 cm respectively, where the measurements are correct to the nearest cm. The paper is cut into n identical squares such that the side lengths of the squares are measured as 4 cm correct to the nearest cm. Find the greatest and the least possible values of n.
"cut into n identical squares" 係應該imply唔會剩低任何紙張，正如平時做volume題目"melted and recast into"都係imply唔會剩低
搵最大嘅n嘅時候，大長方形可以係 30.12 cm x 20.08 cm，小正方形就係 2.51 cm x 2.51 cm，咁就啱啱好96個
搵最小嘅n嘅時候，大長方形可以係 29.7 cm x 19.8 cm，小正方形就係 3.3 cm x 3.3 cm，咁就啱啱好54個
p.s. 呢個討論其實一直存在，只係我比較相信題目嘅意思係「無紙張剩低」，亦都知道唔少人係採取你嘅諗法，所以公開試喺呢種題型都係避重就輕，淨係問greatest possible value，無問過least possible value，所以我諗唔係需要太擔心的！
@@frankiemak9590 Oh,原來係咁，感謝解惑～🙏
一日一條片，補習唔洗錢。👍🏽
Good content fam! Keep the vids coming🙏!
Good content fam! Keep the vids coming!
OMG! Thanks again!!
像極了愛情
good morning sir, very good medicine
😁😁
2021 4月還在看
咁正得唔得㗎！！
Error係mirror d frd!!
Good content fam! Keep the vids coming🙏!
2021 4月還在看