Math and Logic

Random Robot Roaming

The robot starts at the center dot, and then makes four moves at random. Each move is one dot to the left or to the right.

Where is the robot most likely to end up after its four moves: on one of the inner black dots, on an outer orange dot, or on a blue dot in between? Where is the robot least likely to end up? Read ahead to find out, or skip straight to today's challenge for a more advanced problem.

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