If A × B means A is the father of B, A + B means A is the sister of B, and A - B means A is the brother of B, what is the relationship of C if A × C + B?
Five friends, P, Q, R, S, and T, are compared based on their heights. P is taller than Q but shorter than R. S is taller than T but shorter than P. Who is the shortest?
Four friends - Alex, Brian, Charlie, and David - have different favorite colors: Red, Blue, Green, and Yellow. Alex does not like Red or Blue. Brian's favorite color is not Green. Charlie likes Blue. What is David's favorite color?