SOLUTION: Erica does not know the answers to 3 multiple choice questions on a test. Each question has 3 answer choices. Erica randomly guesses the answers to all 3 questions. What is the

Algebra.Com
Question 1032902: Erica does not know the answers to 3 multiple choice questions on a test. Each question has 3 answer choices. Erica randomly guesses the answers to all 3 questions. What is the probability that she will answer only the second question correctly?
Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!
For the first question there are two possible incorrect choices.
For the 2nd question there is only one possible correct choice, while the 3rd question has two possible incorrect choices. All in all there are ways of answering the three questions.
Hence the probability is that she will answer only the second question correctly.

RELATED QUESTIONS

Kevin does not know the answer to two questions on a multiple choice exam.The first... (answered by ilana)
How to do this problem Willard has just been given a ten question multiple choice test in (answered by solver91311)
FIND THE PROBABILITY OF CORRECTLY ANSWERING THE FIRST 4 QUESTIONS ON A MULTIPLE CHOICE... (answered by jorel1380)
5.Find the probability of correctly answering the first 4 questions on a multiple choice... (answered by fractalier)
Find the probability of correctly answering the first 3 questions on a multiple choice... (answered by ikleyn)
Find the probability of correctly answering the first 4 questions on a multiple choice... (answered by math_helper)
There are 20 multiple choice questions on a test. Each questions has 4 possible choices... (answered by stanbon)
In a test there are 3 multiple choice questions, each with 4 choices. A student randomly... (answered by Boreal)
A student who has not studied for a multiple-choice test decides to guess the answers for (answered by math_helper)