Exo L

• duree: 30
• difficulte: 2
• domain: science
• r1_value: 4
• r1_prerequiste: 2
• r2_value: 5
• r2_prerequiste: 4
• r3_value: 6
• r3_prerequiste: 2
• r4_value: 90
• r4_prerequiste: 80
• display_name: Exercice L