There are 7 cars stuck at an intersection. If one car moves, the traffic will be cleared. Which car should it be?
Based on the image, the car that needs to move to resolve the traffic is car number 3 (the red one).
Explanation: Car number 3 is blocking the traffic flow in all four directions:
- Cars number 1 and 2 cannot pass because car number 3 is in the way.
- Cars number 4 and 5 cannot move forward as car number 3 is blocking them.
- Cars number 6 and 7 are also indirectly affected.
When car number 3 moves out of the intersection, the remaining cars will have space to continue:
- Cars number 1, 2, 4, and 5 can move in their respective directions.
- Cars number 6 and 7 will no longer be stuck as the traffic flow will be freed.
Therefore, moving car number 3 is the solution to this situation.