What is the relationship between the 4's in the number 4,498

Find the given elements if matrix d:

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

What is the sum of these mixed numbers 2 1/8 + 4 3/8