我想問free good/economic good 既問題

Economic good is definded as a good has a cost to produce.
Free good is a good has no cost to produce.
Also, it is a good which quantity demanded is smaller than quantity supplied at zero price. Qd<Qs at $0

呢條問題係捉字,講緊係little
little指極少,有眨義之意
指差不多沒有

如果係a little,就變左uncertain

不過,究竟有幾多demand?
呢個唔係econ想知道ge野

Acct:
Should it be quantity demanded and quantity supplied instead of demand and supply respectively?

free goods is the supply is far more than demand.
e.g. air
the supply is mostly unlimited so that this is free goods as demand is far less than supply, not "little demand", we need "air" so the demand may not be little.

2011-09-12 14:00:25 補充：
The quantity supplied > quantity demanded when the price = 0