2006 AMC 12B Problem 7
Problem 7 of 25EasierCounting & Probability
Mr. and Mrs. Lopez have two children. When they get into their family car, two people sit in the front, and the other two sit in the back. Either Mr. Lopez or Mrs. Lopez must sit in the driver’s seat. How many seating arrangements are possible?
Answer choices
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Solution
The driver is one of the two parents: choices.
Any of the remaining people can sit in the front passenger seat, and the last people fill the back in orders.
The total is
Thus, the correct answer is B.