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…
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
Q and R
Q and U
Q and T
T and U
Solution
Blue cover: Q, R, T. Old books: P, Q, R, T, V (S and U are new). Gazetteers: Q, T, U, V (P, R, S are law reports). Old Gazetteers with blue covers must satisfy all three: blue, old and Gazetteer. Q (blue, old, Gazetteer) and T (blue, old, Gazetteer) qualify. Hence Q and T.