binomial distribution

Question

In how many ways can a quality control engineer select a sample of 3 transistors for testing from a batch of 100 transistors?

Answer 1

A very similar question is how many ways can a hiring manager select 3 out of 11 applicants for further consideration.

The answer to that question is C(11,3) = (11!)/[(8!)(3!)] = (11*10*9)/(3*2*1) = 165.

See if you can apply the same logic to your problem.