Question Detail
Question
Ten buses are plying between two places A and B. In how many ways can a person travel from A to B and come back?
Correct Answer
Option C is the correct answer.
Detailed Explanation
This problem uses the Fundamental Principle of Multiplication. The person has 10 choices for the journey from A to B. For the return journey from B to A, the person again has 10 choices (assuming they can use any bus, including the one they came on). Since these are two independent events, the total number of ways is the product of the number of ways for each event: 10 * 10 = 100 ways.
Hint
Apply the multiplication principle for independent events (going from A to B, and then coming back from B to A).