Find the Probability of One Event and a Second Event $\frac { 1 } { 400 }$

question 76

Multiple Choice

Find the Probability of One Event and a Second Event Occurring
-An urn contains balls numbered 1 through 20. A ball is chosen, returned to the urn, and a second ball is chosen. What is the probability that the first and second balls will be a 7?

• A) \(\frac { 1 } { 400 }\)
• B) \(\frac { 1 } { 10 }\)
• C) \(\frac { 7 } { 20 }\)
• D) \(\frac { 7 } { 40 }\)

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Definitions:

Profit Margin

A financial metric expressing the percentage of revenue that remains as profit after all operating expenses are deducted.

Return on Investment

A financial metric used to measure the efficiency of an investment, calculated by dividing the profit gained from the investment by its cost.

Residual Income

The amount of income that an individual has after all personal debts and expenses have been paid, often used in corporate finance to measure the excess of actual profit over the expected return on investment.

Operating Income

Earnings from a company's core business operations, excluding costs and revenues from financing and investments.