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10 months ago
Suppose that car 4 is not the first car to leave and that the sequence at a time between the arrival of the car 7 and car 8 is V, 7, 3, 6, 5. Then which of the following statements MUST be false?
Explanatory Answer
V, 7, 3, 6, 5
Initial sequence could be 1, 2, 3, 4, 5
Now, we know that 4 was not the first car to leave. However, 6 is the next car and is taking the
position of 4.
The possibilities could be:
• 1 leaves , followed by 4, OR
• 2 leaves, followed by 4
In either case, the positions after both cars leaving would be 1, V, 3, V, 5 or V, 2, 3, V, 5.
Now, 6 arrives and takes the position of 4, skipping the initial vacant position in both cases. This
is only possible when the first vacant position is not enough to accommodate Car 6. Hence, Car
6 must be an SUV.
