Answer:
[tex]P_{x} = {n \choose x} p^{x} q^{n-x}[/tex]
Step-by-step explanation:
P = binomial probability
x = number of times for a specific outcome within n trials
[tex]{n \choose x}[/tex] = number of combinations
p = probability of success on a single trial
q = probability of failure on a single trial
n = number of trials