A student is to answer 10 out of 13 questions in an examination. (a) How many choices has he?- (b) How many if he must answer the first two-questions? (c) How many if he must answer the first or second question, but not both? (d) How many if he must answer exactly 3 of the first 5 questions? (e) How many ifhe

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 student is to answer 10 out of 13 questions in an examination.
(a) How many choices has he?-
(b) How many if he must answer the first two-questions?
(c) How many if he must answer the first or second question, but not both?
(d) How many if he must answer exactly 3 of the first 5 questions?
(e) How many if he must answer atleast 3 of the first 5 auestions?
Transcribed Image Text:A student is to answer 10 out of 13 questions in an examination. (a) How many choices has he?- (b) How many if he must answer the first two-questions? (c) How many if he must answer the first or second question, but not both? (d) How many if he must answer exactly 3 of the first 5 questions? (e) How many if he must answer atleast 3 of the first 5 auestions?
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