In a large university, 15% of the students are female. If a random sample of twenty students is selected, d.what is the probability that the sample

In a large university, 15% of the students are female. If a random sample of twenty students is selected,

d.what is the probability that the sample will contain more than nine female students?

The formula I know is n!/x!(n-x)!.

But would like to know how to best calculate on my scientific calculator which we can use during the test.

Easy for me to calculate nCr here: 12C3=4845