Step 1: Analyze the given relations
From the given symbols, we know the following:
- \( B \) is the father of \( K \) (i.e., \( B - K \)), meaning \( B \) is K's father.
- \( K \) is the husband of \( R \) (i.e., \( K \times R \)), meaning \( K \) is married to \( R \).
Now, the question asks us to find the relationship between \( B \) and \( R \).
Step 2: Interpret the possible relationships
The symbols provided are:
- \( B + R \) means that \( B \) is the brother of \( R \).
- \( B \times R \) means that \( B \) is the mother of \( R \).
- \( B - R \) means that \( B \) is the father of \( R \).
However, the relationship between \( B \) and \( R \) cannot be conclusively determined with the given information.
- We know that \( B \) is the father of \( K \) and \( K \) is the husband of \( R \), but there is no direct indication of how \( B \) and \( R \) are related by blood or marriage.
- We cannot conclude that \( B \) is the father of \( R \), the brother of \( R \), or any other relationship just from the given facts.
Step 3: Conclusion
Since there is not enough information to directly establish a clear relationship between \( B \) and \( R \), the correct answer is that the relationship between \( B \) and \( R \) cannot be determined.
Final Answer:
\[
\boxed{\text{Cannot be determined}}
\]