Posted by **Hailey** on Thursday, March 25, 2010 at 8:11pm.

A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer:

(a) all five questions on the exam.

(b) exactly eight questions on the exam.

(c) at least nine questions on the exam.

No matter what I try -- permutations, combinations, random multiplying and dividing -- I can't figure any of these parts out. I don't even know where to start, really.

## Answer this Question

## Related Questions

- Pre-calculus help - I have two problems I am stuck on, if you could show me how ...
- English Language - I asked this question earlier. I need to write 2 letters of ...
- Statistics - 1. In a certain game, the probability of getting a red outcome is 0...
- statistics and probability - It is known that an exam scores of students in STAT...
- problem solving - a select a mathematics theorem or rule from class and make a ...
- Computer Science JAVA FUNCTIONS - Write a Function You will be given one of the ...
- computer science - Hey I have three questions with creating these methods, ...
- computer science - Hey I have three questions with creating these methods can ...
- Pre-Calculus - convert to the alternate form to exponential form. a) 5^4=625 b) ...
- Statiatics - A student ran out of time on a multiple choice exam and randomly ...