What is the probability of these exam topics coming up?

Rock: What is the probability of these exam topics coming up?
There is 14 total topics the exam comprises of 6 questions of which you have to answer 3, I have prepared for 8 of the 14. What is the likelihood of getting 3 of the 8 i studied?

Answers and Views:

Answer by milbers
I’m sure your teacher has passed on their expertise in predicting topics which ‘turn up’ in exams.

Topics which appear in maths exams aren’t randomly selected so you cant really use probability theory to answer this.

8/14 x 7/13 x 6/12 x 3 should give you an idea

Answer by cidyah
Probability of getting a prepared question = 8/14=2/7
P(3 out of 8) = 8C3 (2/7)^3 (5/7)^5 = 8C3 (0.2857)^3 (0.7143)^5 = 0.24284