A test has three parts. Part A consists of seven true-false questions, part B consists of three multiple-choice questions with five choices each, and part C requires you to match three questions with three different answers one-to-one. Assuming that you make random guesses in filling out your answer sheet, what is the probability that you will earn 100% on the test? (Leave your answer as a formula.)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A test has three parts. Part A consists of seven true-false questions, part B consists of three multiple-choice questions with five choices each, and part C requires you to match three questions with
three different answers one-to-one. Assuming that you make random guesses in filling out your answer sheet, what is the probability that you will earn 100% on the test? (Leave your answer as a
formula.)
P(E)
O P(E)
O P(E)
=
P(E) =
P(E)
=
=
=
1
7² x 5³ x 3!
1
27 x 5³ x 3!
1
3² x 53
1
2³ x 35
x 7!
x 7!
1
23 x 75 x 3!
Transcribed Image Text:A test has three parts. Part A consists of seven true-false questions, part B consists of three multiple-choice questions with five choices each, and part C requires you to match three questions with three different answers one-to-one. Assuming that you make random guesses in filling out your answer sheet, what is the probability that you will earn 100% on the test? (Leave your answer as a formula.) P(E) O P(E) O P(E) = P(E) = P(E) = = = 1 7² x 5³ x 3! 1 27 x 5³ x 3! 1 3² x 53 1 2³ x 35 x 7! x 7! 1 23 x 75 x 3!
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