SOLUTION: Mary purchased a package of 18 different plants, but she only needed 15 plants for planting. In how many ways can she select the 15 plants from the package to be planted?
How do
Algebra ->
Probability-and-statistics
-> SOLUTION: Mary purchased a package of 18 different plants, but she only needed 15 plants for planting. In how many ways can she select the 15 plants from the package to be planted?
How do
Log On
Question 490692: Mary purchased a package of 18 different plants, but she only needed 15 plants for planting. In how many ways can she select the 15 plants from the package to be planted?
How do I do this? Could I have some help? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Her 1st choice is 1 of 18, then 1 of 17, etc
--> 18*17*16...5*4
= 18!/3!
= 1,067,062,284,288,000 ways
