Question
For the universal set, \( U=\{g, h, p, q, r, x\} \), complete the parts below. Write your answers in roster form or as \( \varnothing \). (a) Suppose \( B=\{p, q, x\} \). Then what is \( \bar{B} \) ? \[ \bar{B}=\square \] (b) Suppose we know that \( \bar{C}=\{g, q, r, x\} \). Then what would \( C \) have to be? \( C=\square \)
Ask by Davies Hardy. in the United States
Jan 26,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
- (a) \( \bar{B} = \{g, h, r\} \)
- (b) \( C = \{h, p\} \)
Solution
Let's solve each part step by step using the universal set \( U = \{g, h, p, q, r, x\} \).
### (a) Finding \( \bar{B} \)
Given:
\[ B = \{p, q, x\} \]
The complement of \( B \), denoted \( \bar{B} \), consists of all elements in \( U \) that are **not** in \( B \).
\[ \bar{B} = U - B = \{g, h, p, q, r, x\} - \{p, q, x\} = \{g, h, r\} \]
**Answer:**
\[ \bar{B} = \{g, h, r\} \]
### (b) Finding \( C \) from \( \bar{C} \)
Given:
\[ \bar{C} = \{g, q, r, x\} \]
To find \( C \), we take the complement of \( \bar{C} \), which means removing all elements of \( \bar{C} \) from \( U \).
\[ C = U - \bar{C} = \{g, h, p, q, r, x\} - \{g, q, r, x\} = \{h, p\} \]
**Answer:**
\[ C = \{h, p\} \]
**Final Answers:**
- (a) \( \bar{B} = \{g, h, r\} \)
- (b) \( C = \{h, p\} \)
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Given the universal set \( U=\{g, h, p, q, r, x\} \) and the subset \( B=\{p, q, x\} \): (a) The complement of \( B \), denoted \( \bar{B} \), consists of the elements in \( U \) that are not in \( B \). Thus, we have: \[ \bar{B}=\{g, h, r\} \] (b) Since \( \bar{C}=\{g, q, r, x\} \) represents the elements not in \( C \), we can find \( C \) by identifying the remaining elements in \( U \): \[ C=\{h, p\} \]