Find next month

Question

I have a man that sells in average 36 deal papers every year.I am searching the possibility to sell more than 2 deal papers,in the next mouth. I take this and solve it $$ f(x)={n \choose x} p^x (1-p)^{n-x} $$ For n=36 x=2 p=30 (from months) I solve it and i find 4 is this right?A friend of me told me it isn't Dionymic nor Poisson