A licence plate has [k] digits from {0,1,…,9}, followed by [n] letters from the English alphabet. How many possible licence plates are there with no digits or letters repeated (i.e., no two digits are the same AND no two letters are the same in the licence plate). 

Consider independent flips of a coin, where the probability of heads is [p]. The experiment is to flip the coin until we get our first heads. The random variable is the total number of flips we had to make to get that first heads. What is the probability that the total number of flips is [n]?

If an aircraft has an FAA approved MEL and the inoperative equipment is not listed in its Procedures Document, the airplane is considered un-airworthy and cannot be flown.

A client comes into the clinic with a longstanding history of depression and chronic renal failure. He is an antidepressant and a diuretic and complains of increased depression, mild confusion, irritability, and overall apathy from being too tired to do anything.  The best initial PMHNP action to take at this time is:

A patient with dementia related to Alzheimer’s disease has severe confusion and agitation. The PMHNP recognizes that the most appropriate intervention is:

An antidepressant that is least likely to cause sexual side effects is:

Persistent depressive (dysthymia) disorder symptoms must be present for at least how long to meet the DSM-5=TR criteria for persistent depressive disorder in adults?

The purpose of administrating the Patient Health Questionnaire-9 is to:

The PMHNP has an ethical (and in most states) legal duty to warn others if a patient:

All the following medication interventions would be reasonable as the next step in the treatment of major depressive disorder when the patient has only partially improved after six to eight weeks in response to an adequate dose of a standard SSRI antidepressant EXCEPT: