1. biologia   geometry   physics   biology   chemistry   Hint Half-n-half Clue   2. filosofia   chemistry   philosophy   biology   physics   Half-n-half Clue   3. geografia   geography   psychology   biology   zoology   Half-n-half Clue   4. física   biology   geology   calculus   physics   Half-n-half Clue   5. geometria   geometry   calculus   algebra   trigonometry   Half-n-half Clue   6. álgebra   physics   chemistry   algebra   history   Half-n-half Clue   7. história   calculus   physics   psychology   history   Half-n-half Clue