Five books are arranged on a shelf: A, B, C, D, and E. A is to the left of B but to the right of C. D is to the right of E but to the left of A. Which book is in the middle?
In a family of six members: P, Q, R, S, T, and U, P is the father of Q. R is the mother of Q. S is the brother of Q. T is the sister of R. U is the grandfather of Q. Who is the grandmother of Q?
There are four boxes labeled A, B, C, and D. The following conditions apply: Box A contains more items than Box B. Box C contains fewer items than Box D. If Box D contains 10 items, which box contains the least items?
Five students: X, Y, Z, W, and V are participating in a competition. The following conditions apply: X scored more than Y but less than Z. W scored less than V. Who scored the highest?