how would you go about this question?

a 12 inch by 14inch rectangular cake is divided into 2 inch squares. if your piece is chosen at random what is the probability that my piece is chosen from the outside edge?

1 answer

This cake is divided into 42 pieces (6 pieces across amd 7 pieces down).

There will be 26 edge pieces.

Your chance of getting an edge piece is 26 out of 42 or 26/42 or 13/21.