An airplane's seating arrangement consists of 28 rows, with 4 seats on each side of the aisle. Each side has one window seat. In 6 of these rows, the view from the window seats is blocked by the wings. If a passenger is randomly assigned a window seat, what is the likelihood that they will have an unobstructed view?

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1/6

1/4

5/7

11/14

Correct

22/28

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Official Explanation

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The total number of window seats is 28 + 28 = 56 (for both sides of the aisle). The number of obscured seats on both sides is 6 + 6 = 12. Therefore, the number of…

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What this question tests

What it tests

Your ability to compute probabilities of single and compound events, including 'at least one' questions.

Common trap

Forgetting to use the complement for 'at least one', or treating dependent events as independent.