Exo E

• duree: 15
• difficulte: 3
• domain: science
• r1_value: 8
• r1_prerequiste: 6
• r2_value: 6
• r2_prerequiste: 4
• r3_value: 3
• r3_prerequiste: 1
• r4_value: 56
• r4_prerequiste: 2
• display_name: Exercice E