Seven books P, Q, R, S, T, U and V 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. Books of old Gazetteers with blue covers are

Correct Option

The problem requires identifying books that satisfy three specific criteria simultaneously: being old, having blue covers, and being Gazetteers.

• Books with blue covers are R, Q, and T.
• Books that are old are P, Q, R, T, and V.
• Books that are Gazetteers are Q, T, U, and V.

By applying all three conditions:

• Book Q: Has a blue cover, is old, and is a Gazetteer.
• Book T: Has a blue cover, is old, and is a Gazetteer.

Therefore, Q and T are the books that are old Gazetteers with blue covers.

Incorrect Options

• Option 1 (Q and R): While Q meets all criteria, R has a blue cover and is old, but it is a Law Report, not a Gazetteer. Thus, R does not fit the "Gazetteers" criterion.

• Option 2 (Q and U): While Q meets all criteria, U is a Gazetteer but has a red cover and is a new book. It fails both the "blue covers" and "old" criteria.

• Option 4 (T and U): While T meets all criteria, U is a Gazetteer but has a red cover and is a new book. It fails both the "blue covers" and "old" criteria.