Finance系列(4)之Credit Card

1. Credit card
A type of credit that is widely available. It can be used to purchase goods and services on credit and to obtain cash advances.

1.1. Advantages
A convenience method of payment.
A convenience source of credit.

1.2. Lost cards
Notify the bank immediately.

1.3. Features
Bonus point rewards.
Interest-free repayment period.
Flexible payment options.

1.4. Credit card number/CVV2 number
Calculation

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