Four students sat the same test and no two of them scored the same marks. Amit scored more than Bela. Chetan also scored more than Bela. Amit scored more than Divya. Which one of these statements MUST be true?

Amit is above Bela, so somebody beats Bela and she cannot be top — that is forced by the very first fact and holds whatever else is true. The traps are three things the facts leave open: Chetan is known only to beat Bela, so he may sit above or below Amit, which means neither 'Amit is highest' nor 'Chetan beat Amit' is forced; and Divya is known only to be below Amit, so she may be above or below Bela.