How Many 10-Digit Telephone Numbers (Area Code + Number) Are

question 158

Multiple Choice

How many 10-digit telephone numbers (area code + number) are possible if the first digit cannot be zero, the first three digits cannot be 800 or 900, and the number must end in 0000?

• A) 654,642
• B) 898,000
• C) 900,000
• D) 899,000

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Definitions:

Noncompeting Firms

Businesses operating in different markets or sectors and thus do not compete directly with each other for customers.

Unrelated Goods

Products that are not associated or commonly linked together in the context of production, use, or consumption.

Sherman Act

A foundational antitrust law in the United States that prohibits monopolistic practices and promotes competition.

Boycott

A protest strategy where individuals or groups refuse to buy, use, or participate in something as a form of protest.