Question

A quiz has 5 multiple choice question. Each questions has 4 answer choices of which one is the correct answer and the other 3 are incorrect. Suppose that you guess all the answers
a. How many ways are there to answer the 5 qestions?
b. What is the probability of getting all 5 question right?
c. What is the probability of getting exactly 4 questions right and 1 wrong?
d. What is the probability of doing well ( getting at least 4 right)?

Answer 1

Permutation!
Combination!

Answer 2

Or just 5*4

Answer 3

for part (a) there are 4 ways to answer each question

so its 4 x 4 x 4 x 4 x 4 for the 5 questions...

(b) how many ways do you think you can get all answers correct... and how many possible ways of answering the questions are available.

hope this is a help...