An instructor gives an exam with twenty questions. Students are allowed to choose any fifteenquestions to answer.(a)How many different choices of fifteen questions are there?(b)Suppose nine questions require coding and eleven do not.(i)How many groups of fifteen questions contain seven that require coding andeight that do not?(ii)Howmany groups of fifteen questions contain at most eight that require coding?(c)Suppose the exam instruction specifies that at most one of questions 1 and 2 MAY BEincluded among the fifteen. How many different choices of fifteen questions are there?(d)Suppose the exam instruction specifies that either both questions 1 and 2 are to beincluded among the ten or neither is to be included. How many different choices of tenquestions are there?

Answered: Image /qna-images/answer/cff01166-9830-48cb-afdb-ab0612eb0355.jpg

Answered: An instructor gives an exam with twenty…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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