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2. A student is to answer 10 out of 13 questions. Find the number of choices where the student must answer: (a) the first three questions. (b) first or second question but not both. (c) exactly 2 out of first 5 questions. (d) at least 4 out of the first 6 questions.

2. A student is to answer 10 out of 13 questions. Find the number of choices where the student must answer: (a) the first three questions. (b) first or second question but not both. (c) exactly 2 out of first 5 questions. (d) at least 4 out of the first 6 questions.

Advanced Engineering Mathematics
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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2. A student is to answer 10 out of 13 questions. Find the number of choices where the student must answer: (a) the first three questions. (b) first or second question but not both. (c) exactly 2 out of first 5 questions. (d) at least 4 out of the first 6 questions.
Transcribed Image Text:2. A student is to answer 10 out of 13 questions. Find the number of choices where the student must answer: (a) the first three questions. (b) first or second question but not both. (c) exactly 2 out of first 5 questions. (d) at least 4 out of the first 6 questions.
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