1. chemistry   himiya   astronomiya   fizika   geometriya   Hint Half-n-half Clue   2. biology   astronomiya   biologiya   geometriya   filosofiya   Half-n-half Clue   3. calculus   geografiya   ischisleniye   geometriya   geologiya   Half-n-half Clue   4. psychology   geometriya   zoológija   trigonometriya   psixológija   Half-n-half Clue   5. history   geologiya   istórija   botanika   filosofiya   Half-n-half Clue   6. geometry   geometriya   geografiya   astronomiya   zoológija   Half-n-half Clue   7. botany   himiya   botanika   álgebra   geografiya   Half-n-half Clue