The contractor wants to plant six oak trees, nine maple trees, and five poplar trees along the

Question:

The contractor wants to plant six oak trees, nine maple trees, and five poplar trees along the subdivision street. The trees are to be spaced evenly. In how many distinguishable ways can they be planted?
a. Identify the total number of objects n.
b. Identify each type of object.
c. Count the number of objects in each type.
d. Evaluate n! / n1! ∙ n2! … nk!