Four fruits are arranged based on their sweetness: Mango, Apple, Banana, and Grape. Mango is sweeter than Apple but less sweet than Banana. Grape is the least sweet. Which fruit is the sweetest?
If A * B means A is the father of B, A + B means A is the son of B, and A - B means A is the daughter of B, what is the relationship of C if A * C - B?
In a family of six members: P, Q, R, S, T, and U, there are two males and four females. P is a teacher, Q is a doctor, R is a male, and S is U's sister. Who is the doctor?