If $A = \{ \text { Klaas, Johan, Henrika, Sarie } \}$

question 19

True/False

If $A = \{ \text { Klaas, Johan, Henrika, Sarie } \}$ and $C = \{ \text { Hans, Henrika } \}$ , then $n ( A \cup C ) = n ( A ) + n ( C ) - n ( A \cap C )$ .

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Definitions:

Warranty

A promise or guarantee made by a seller to a buyer to repair or replace a product that is found to be defective within a specified period.

Credible Threat

A strategy or warning that is believable and likely to be carried out in a strategic situation.

Stackelberg Firm

A business that is considered a leader in a market, setting prices or quantities that followers in the market then respond to.

Incentive

A motivation or reward offered to encourage specific behaviors or actions, often used in business, economics, and psychology.