When taking a 20 question multiple choice test, where each question has 3 possible answers, it would be unusual to get or more questions correct by guessing alone.

Mrs. Krabappel writes a multiple-choice test with twenty questions, each of which has five choices (ABCDE).  If Jimmy guesses randomly at all twenty questions, how many questions should Jimmy get right?

You have 3 tests each containing 100 multiple choice questions where each question has 5 possible answers. You win $1000 if you and some friends of yours can answer 14 questions correctly. You have the following choices. First, choose which test to use. Second, choose 14 questions from the selected test to answer. Third, choose 5 of your 8 friends to answer a question. Fourth , choose one question for each of the 5 to answer. Finally, you get to answer the remaining questions. How many choices do YOU have overall?

The chess club needs to nominate a government (president, vice president, treasurer, and secretary).  What are the chances I could be the president of the club if there are 31 other members (32 total)?

A multiple-choice test consists of 5 questions, each question with 4 possible responses(A, B, C, D). A student guesses on each question. Find the probability that the student will guess correctly on at least 1 question.

a multiple-choice test has 12 questions, with each question having five choices. In how many different ways can a student answer the 12 questions? With an explanation, please.

Jamal has five comic books, four novels, and three biographies. He wants to choose one comic book, one novel, and one biography randomly. How many total outcomes are in this sample space?