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[{"id":46086,"question":"Quel est le résultat de l'opération (-3) × (-4) ?","option_a":"-12","option_b":"12","option_c":"7","option_d":"-7","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le produit de deux nombres négatifs est positif. (-3) × (-4) = 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46087,"question":"L'équation 2x + 5 = 11 a pour solution x = 3.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Si x = 3, alors 2×3 + 5 = 11 → 6 + 5 = 11, ce qui est vrai. La solution est donc correcte.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46088,"question":"Quelle est la formule pour calculer l'aire d'un triangle ?","option_a":"A = base × hauteur","option_b":"A = (base × hauteur) \/ 2","option_c":"A = côté × côté","option_d":"A = π × rayon²","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'aire d'un triangle se calcule avec la formule A = (base × hauteur) \/ 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46089,"question":"Le nombre 0,75 est égal à 3\/4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,75 = 75\/100 = 3\/4 après simplification.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46090,"question":"Résoudre l'inéquation 3x - 2 \u003E 7.","option_a":"x \u003E 3","option_b":"x \u003C 3","option_c":"x \u003E 9","option_d":"x \u003C 9","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x - 2 \u003E 7 → 3x \u003E 9 → x \u003E 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46091,"question":"Quel est le périmètre d'un carré de côté 5 cm ?","option_a":"10 cm","option_b":"20 cm","option_c":"25 cm","option_d":"50 cm","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le périmètre d'un carré se calcule avec P = 4 × côté. Ici, P = 4 × 5 = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46092,"question":"La somme des angles d'un triangle est toujours égale à 180°.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale de la géométrie plane.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46093,"question":"Quel est le développement de (x + 3)² ?","option_a":"x² + 9","option_b":"x² + 6x + 9","option_c":"x² + 3x + 9","option_d":"x² + 3x + 3","option_e":"","option_f":"","bonne_reponse":"B","explication":"Utilisez l'identité remarquable (a + b)² = a² + 2ab + b². Ici, (x + 3)² = x² + 6x + 9.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46094,"question":"Un nombre premier est divisible uniquement par 1 et par lui-même.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est la définition même d'un nombre premier.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":46095,"question":"Calculer la moyenne des nombres 4, 6, 8 et 10.","option_a":"7","option_b":"7,5","option_c":"8","option_d":"6,5","option_e":"","option_f":"","bonne_reponse":"B","explication":"Moyenne = (4 + 6 + 8 + 10) \/ 4 = 28 \/ 4 = 7,5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]