An employee of a car parts store was mistaken and saved the defective flashlights, along with the non-defective ones. So on this shelf were 120 perfect flashlights and 30 defective flashlights. A...

An employee of a car parts store was mistaken and saved the defective flashlights, along with the non-defective ones. So on this shelf were 120 perfect flashlights and 30 defective flashlights. A salesman went to the shelf and removed a flashlight. Let X be the defective lanterns, determine P(X).