They can be designated in 6 different ways.9. Grading Exams: Your professor has just collected eight different statics exams. If theseexams are graded in random order, what is the probability that they are graded in alphabeticalorder of the students who took the exam?21. Phone numbers currents rules for telephone are codes allow the use of digits 2-9 for the firstdigits, and 0-931SAMSUNGW

As per our guidelines we are supposed to answer only one question per post so i am solving first…

Answered: 9. Grading Exams: Your professor has…

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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please provide thorough explanation for each question and correct answers...........
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9. Grading Exams: Your professor has just collected eight different statics exams. If these exams are graded in random order, what is the probability that they are graded in alphabetical order of the students who took the exam? 21 Phone numbers o