Six books P, Q, R, S, T and U are placed side by side. R, Q and T have blue covers and other books have red covers. Only S and U are new books and the rest are old, P, R and S are law reports, the rest are Gazetteers. Which two books are old Gazetteers with blue covers ?

Options

A. Q and R
B. Q and T
C. Q and R
D. T and U

Answer

To solve the problem step by step, we will analyze the information given about the six books and categorize them based on their covers, age, and type.

### Step-by-Step Solution:

1. **Identify the Books and Their Covers:**
- We have six books: P, Q, R, S, T, U.
- The books with blue covers are R, Q, and T.
- The remaining books (P, S, and U) have red covers.

**Hint:** Write down the books and categorize them by their cover colors.

2. **Determine the Age of the Books:**
- It is stated that only S and U are new books.
- Therefore, the old books are P, Q, R, and T (since S and U are new).

**Hint:** Mark the age of each book based on the information provided.

3. **Classify the Books by Type:**
- P, R, and S are classified as law reports.
- The remaining books (Q, T, and U) are classified as Gazetteers.

**Hint:** Use a table or list to categorize the books into law reports and Gazetteers.

4. **Identify the Old Gazetteers with Blue Covers:**
- From our classification, the old books are P, Q, R, and T.
- The Gazetteers are Q, T, and U.
- Among the old books (P, Q, R, T), the ones that are also Gazetteers are Q and T.

**Hint:** Cross-reference the lists of old books and Gazetteers to find the common books.

5. **Conclusion:**
- The two books that are old Gazetteers with blue covers are Q and T.

### Final Answer:
The two books that are old Gazetteers with blue covers are **Q and T**.