8. There are 3 red balloons, 5 blue balloons, and 4 pink balloons in a shop. 3 balloons are chosen at random from the shop by a customer. Find the probability that the balloons chosen are a. 2 red and 1 pink b. all blue c. of different colors.
8. There are 3 red balloons, 5 blue balloons, and 4 pink balloons in a shop. 3 balloons are chosen at random from the shop by a customer. Find the probability that the balloons chosen are a. 2 red and 1 pink b. all blue c. of different colors.
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
Answer numbers 8 to 10
Transcribed Image Text:7.2 fair dice are rolled. What is the probability of getting a sum of 7 or a sum equal to 10?
8. There are 3 red balloons, 5 blue balloons, and 4 pink balloons in a shop. 3 balloons are chosen at
random from the shop by a customer. Find the probability that the balloons chosen are
a. 2 red and 1 pink
b. all blue
c. of different colors.
9. A dies is tossed twice. Find the probability of getting 1 or 5 on the first toss and a 2,3, or 6 on the
second toss.
10. Consider a box that contain 14 red chips, 12 blue chips, and 9 yellow chips. Suppose that 2 chips
drawn one after the other without putting back the first chip or withhout replacement.
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