Question 1206113
p = .1
q = 1-p = .9
n = 10
p(x) = p^x * q^(n-x) * c(n,x)
c(n,x) = n! / (x! * (n-x)!)


results are shown below.


<img src = "http://theo.x10hosting.com/2024/021601.jpg">


as an example, for x = 5, you get:
p(5) = .1^5 * .9^5 * c(10,5) = .0014880348.


c(10,5) = 10! / (5! * 5!) = (10*9*8*7*6*5!) / (5! * 5!) = (10*9*8*7*6)/(5*4*3*2*1) = 252, as shown for c(10,5) in the spreadsheet.