Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in a level position and a grain of rice lands on the board at a random point, what is the probability that it lands on a corner section?

Question

2/9

1/3

4/9

5/9

Answer 1

4of the 9 squares are corner squares:
P = 4/9.