Concept explainers
a.
To find the probability of choosing 2 blue socks.
a.
Answer to Problem 13E
The probability of choosing 2 blue socks is
Explanation of Solution
Given information:
A drawer contains 4 blue socks, 6 gray socks, and 8 black socks.
Calculation:
Let P be the probability of choosing 2 blue socks.
Total number of blue socks is 4.
Total number of socks
Therefore,
Probability of choosing blue socks in first selection is
Probability of choosing blue socks in second selection is
Probability of choosing 2 blue socks is
Hence,
The probability of choosing 2 blue socks is
b.
To find the probability of choosing 2 blue socks.
b.
Answer to Problem 13E
The probability of choosing 2 gray socks is
Explanation of Solution
Given information:
A drawer contains 4 blue socks, 6 gray socks, and 8 black socks.
Calculation:
Let P be the probability of choosing 2 blue socks.
Total number of gray socks is 6.
Total number of socks
Therefore,
Probability of choosing gray socks in first selection is
Probability of choosing gray socks in second selection is
Probability of choosing 2 blue socks is
Hence,
The probability of choosing 2 gray socks is
c.
To find the probability of choosing 2 black socks.
c.
Answer to Problem 13E
The probability of choosing 2 black socks is
Explanation of Solution
Given information:
A drawer contains 4 blue socks, 6 gray socks, and 8 black socks.
Calculation:
Let P be the probability of choosing 2 black socks.
Total number of black socks is 8.
Total number of socks
Therefore,
Probability of choosing black socks in first selection is
Probability of choosing black socks in second selection is
Probability of choosing 2 black socks is
Hence,
The probability of choosing 2 black socks is
d.
To find the probability of choosing same color socks.
d.
Answer to Problem 13E
The probability of choosing same color socksis
Explanation of Solution
Given information:
A drawer contains 4 blue socks, 6 gray socks, and 8 black socks.
Calculation:
Let P be the probability of choosing same color socks.
The probability of choosing 2 blue socks is
The probability of choosing 2 gray socks is
The probability of choosing 2 black socks is
Hence,
The probability of choosing same color socks is
Chapter 11 Solutions
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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