[Econ衝**] 2017 DSE 經濟科試前討論區

考下大家
Competition will NOT arise if

A. all individual are identical.
B. there is a monopoly in each and every market.
C. there is no market.
D. all goods are free goods.

B?
淨係覺得一定唔係a

D?

答案係D
唔係B 嘅原因係因為monopoly 都會有non-price competition

Scarcity implies

A. the market is the most efficient place for allocating resources.
B. shortage if the market does not exist.
C. the concept of equilibrium is essential.
D. some people must be discriminated against in a society.

Scarcity implies

A. the market is the most efficient place for allocating resources.
B. shortage if the market does not exist.
C. the concept of equilibrium is essential.
D. some people must be discriminated against in a society.

D?

Scarcity implies

A. the market is the most efficient place for allocating resources.
B. shortage if the market does not exist.
C. the concept of equilibrium is essential.
D. some people must be discriminated against in a society.

我答唔答得

D

舊登outliner巴打有無過黎 ？

Outliers

Scarcity implies

A. the market is the most efficient place for allocating resources.
B. shortage if the market does not exist.
C. the concept of equilibrium is essential.
D. some people must be discriminated against in a society.

我答唔答得

D

你真係咩都知嫁喎

D

Scarcity implies

A. the market is the most efficient place for allocating resources.
B. shortage if the market does not exist.
C. the concept of equilibrium is essential.
D. some people must be discriminated against in a society.

我答唔答得

D

你真係咩都知嫁喎

Style似，其實唔肯定，我打漏左問號

hello大家我番黎啦

想問下option a 同b有咩分別？
點解option b 唔會令到md下降？

A expectation = 啲人想賺錢去invest bond
B = 貴左唔會有incentive 去特別買

Expectation呢樣野課課都出得，分好d expected change 同 change

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

阻一阻各位
我而家中五，希望下年dse econ有5*
校內試基本上徘徊係六至七十分
學校take elective1

想問下各位:
點解上面咁多巴打recommend e2?兩者有咩分別？
另外而家仲有一年時間嚟講各位建議我點溫？自己睇？報補習？
最後我本教科書都係用緊Pearson 想知有咩好大嘅問題？

最後祝呢個post嘅巴絲考到自己想要嘅分數啦

e1比起e2多好多野背
好似係咁

我自己溫落都覺得anti competitive behaviour有好多嘢要背
等我睇下e2係點先
多謝巴打

E1 好多野背
E2 一識左concept就條條都滿分
寫既野又少 你睇返2015個條 畫條線 plot一點就3分

咁巴打覺得學校教e1嘅原因係乜
會唔會係e2個concept較難掌握？

因為之前教開a level?

我老師確實係有教al

其實兩課al都有，大學econ course更加教ppf先，
我諗係好多人搞唔到OC個d

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

New CS = (140-130) =10 (P of Qd1 -Pnew equilibrium)
New PS = (130-110) + (130-100) = 20+30 =50
130-110 (Pnew equilibrium - Pof Qs2)
130-100 (Pnew equilibrium - Pof Qs1)

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

Original equilibrium price原本均衡價格 = $120
Price floor 價格下限 = $130

=> Effective Price floor 有效價格下限

而家交易量= 2 unit

咁TSS = summation(MB-MC)，我地知MB=D, MC=S

TSS = (140-100) + (130-110)= $60

有巴打提到用三角形，其實出得最準既題目係逐個Q加上去，你係唔會用三角形。三角形係Q唔係逐個上，同堆有講係linear demand curve/比左圖你先會用（數學concept黎）。

你見到坊間題目唔係咁就係出得唔好。

再黎
Mr. Chan and Ms. Lee are accountants and managed an accounting firm. Both of them will need to bear the losses incurred from their business. What is the type of their firm? What are their roles?
A. Private Limited Company; Shareholders
B. Private Limited Company; Partners
C. Partnership; Partners
D. Sole Proprietorship; Owners

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

New CS = (140-130) =10 (P of Qd1 -Pnew equilibrium)
New PS = (130-110) + (130-100) = 20+30 =50
130-110 (Pnew equilibrium - Pof Qs2)
130-100 (Pnew equilibrium - Pof Qs1)

要清楚既係
CS = Summation(MB-P)
PS = Summation(P-MC)
TSS = Summation(MC-MB)

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

New CS = (140-130) =10 (P of Qd1 -Pnew equilibrium)
New PS = (130-110) + (130-100) = 20+30 =50
130-110 (Pnew equilibrium - Pof Qs2)
130-100 (Pnew equilibrium - Pof Qs1)

小畫家
你最好畫幅圖睇會比較清楚

再黎
Mr. Chan and Ms. Lee are accountants and managed an accounting firm. Both of them will need to bear the losses incurred from their business. What is the type of their firm? What are their roles?
A. Private Limited Company; Shareholders
B. Private Limited Company; Partners
C. Partnership; Partners
D. Sole Proprietorship; Owners

C
partnership requires different specialised skills

呢個係你解釋緊個答案？

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

New CS = (140-130) =10 (P of Qd1 -Pnew equilibrium)
New PS = (130-110) + (130-100) = 20+30 =50
130-110 (Pnew equilibrium - Pof Qs2)
130-100 (Pnew equilibrium - Pof Qs1)

小畫家
你最好畫幅圖睇會比較清楚

巴打好有心

GFRIEND Buddy?

再黎
Mr. Chan and Ms. Lee are accountants and managed an accounting firm. Both of them will need to bear the losses incurred from their business. What is the type of their firm? What are their roles?
A. Private Limited Company; Shareholders
B. Private Limited Company; Partners
C. Partnership; Partners
D. Sole Proprietorship; Owners

C
partnership requires different specialised skills

呢個係你解釋緊個答案？

(唔知係咪out c)
professional firm (eg acct, law)
一定唔可以係limited liability
因為要owner負責
有2條友->唔係sole proprietorship
所以得番partnership係合理

求解 依課一向麻麻地 諗唔明 想有個詳細嘅logic flow 唔該哂

1. 搵equilibrium
Qd = Qs = 3 units at P=120
2. Effective Price Floor?
Yes, Pf = 130 > 120
3. Consumer Surplus
New CS = 10
Old CS = 20+10 = 30
4. Producer Surplus
New PS = 30+20=50
5. TSS new = CS+PS = 60
=> A

依兩part係點計出黎？邊個數減邊個數？

20 10 30同20依幾個數
同埋另外一位巴打講可以用(140-100)+(130-110)嘅方法計tss 兩個brackets係分別計緊cs and ps定點？

依課真係唔掂 等埋巴打解答拿拿聲溫番熟啲concepts先得

推一推

等等

New CS = (140-130) =10 (P of Qd1 -Pnew equilibrium)
New PS = (130-110) + (130-100) = 20+30 =50
130-110 (Pnew equilibrium - Pof Qs2)
130-100 (Pnew equilibrium - Pof Qs1)

小畫家
你最好畫幅圖睇會比較清楚

巴打好有心

GFRIEND Buddy?

yes
咁都知