Two integers are randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8, 9} and are added together. Find the probability that their sum is 14 if they are selected (a) with replacement, (b) without replacement.

Two integers are randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8, 9} and are added together. Find the probability that their sum is 14 if they are selected (a) with replacement, (b) without replacement.

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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Question

Two integers are randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8, 9} and are added together. Find the probability that their sum is

if they are selected

(a) with replacement,

(b) without replacement.

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