Homework Answers
(b) 2 socks from 20 socks can be selected in 20C2 ways
Socks of the same color can be selected in 2*10C2 ways
Thus, the required probability = 2*10C2/20C2 = 9/19 = 0.4737
(c) 5 cards can be selected from a standard deck of cards in 52C5 ways
Number of ways of selecting cards such that all 5 are from the same suit = 4*13C5
The required probability = 4*13C5/52C5
= 0.00198
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b and c
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1. 2. 3. A drawer contains black, brown, and white socks. How many
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selected 20 persons by the random. What is the probability that
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Question 3. (20 pts.) 1. A drawer contains...
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks...
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks ensure two of the same color? 2. With 2,0,3 and 6 how many three digits even numbers can be generated without replacements? 3. We selected 20 persons by the random. What is the probability that only 3 of them have the same birthday at August? Find the probability that only 3 of them have the common month for their birthday?
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks...
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks ensure two of the same color? 2. With 2,0,3 and 6 how many three digits even numbers can be generated without replacements? 3. We selected 20 persons by the random. What is the probability that only 3 of them have the same birthday at August? Find the probability that only 3 of them have the common month for their birthday?
1. A drawer contains black, brown, and white socks. How many socks ensure two of the...
1. A drawer contains black, brown, and white socks. How many socks ensure two of the same color? 2. With 2,0,3 and 6 how many three digits even numbers can be generated without replacements? 3. We selected 20 persons by the random. What is the probability that only 3 of them have the same birthday at August? Find the probability that only 3 of them have the common month for their birthday?
Suppose your upper drawer has 36 different socks: 12 are white, 10 are black, 6 are...
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(10) Suppose a drawer contains 5 black socks and 3 white socks. Socks are selected one...
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1. 2. 3. A drawer contains black, brown, and white socks. How many
socks ensure two of the same color? With 2,0,3 and 6 how many three
digits even numbers can be generated without replacements? We
selected 20 persons by the random. What is the probability that
only 3 of them have the same birthday at August? Find the
probability that only 3 of them have the common month for their
birthday?
Question 3. (20 pts.) 1. A drawer contains...
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks ensure two of the same color? 2. With 2,0,3 and 6 how many three digits even numbers can be generated without replacements? 3. We selected 20 persons by the random. What is the probability that only 3 of them have the same birthday at August? Find the probability that only 3 of them have the common month for their birthday?
Question 3. (20 pts.) 1. A drawer contains black, brown, and white socks. How many socks ensure two of the same color? 2. With 2,0,3 and 6 how many three digits even numbers can be generated without replacements? 3. We selected 20 persons by the random. What is the probability that only 3 of them have the same birthday at August? Find the probability that only 3 of them have the common month for their birthday?
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xl In a drawer, there are 33 socks. 21 of them are crew socks, and the rest are low-cut ones. Of the crew socks, 12 are black, 7 are white and 2 are gray. Of the low-cut socks, 5 are black, 4 are white, and 3 are gray. a) If two socks are randomly selected without replacement, what is the probability that the 1st is a low-cut sock and the 2nd is either a white or a gray sock? A...
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