Quiz Mathématiques — Niveau Collège : Testez vos connaissances !

Question 1 sur 10 10:00

[{"id":66992,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 2","option_d":"x = 10","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 3x - 5 = 10, on ajoute 5 des deux côtés : 3x = 15. Ensuite, on divise par 3 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66993,"question":"Un triangle rectangle a des côtés de 3 cm et 4 cm. Quelle est la longueur de l'hypoténuse ?","option_a":"5 cm","option_b":"6 cm","option_c":"7 cm","option_d":"8 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"D'après le théorème de Pythagore, l'hypoténuse mesure √(3² + 4²) = √(9 + 16) = √25 = 5 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66994,"question":"Vrai ou Faux ? L'équation x² = 16 a deux solutions : x = 4 et x = -4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'équation x² = 16 a bien deux solutions : x = 4 et x = -4, car (-4)² = 16.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66995,"question":"Quelle est la valeur de l'expression 2a + 3b lorsque a = 1 et b = 2 ?","option_a":"8","option_b":"7","option_c":"9","option_d":"10","option_e":"","option_f":"","bonne_reponse":"A","explication":"En remplaçant a par 1 et b par 2, on obtient 2(1) + 3(2) = 2 + 6 = 8.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66996,"question":"Vrai ou Faux ? Un angle de 90° est appelé angle plat.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un angle plat mesure 180°. Un angle de 90° est appelé angle droit.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66997,"question":"Quelle est la solution de l'inéquation 2x + 3 \u003E 7 ?","option_a":"x \u003E 2","option_b":"x \u003E 5","option_c":"x \u003E 1","option_d":"x \u003E 3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 2x + 3 \u003E 7, on soustrait 3 : 2x \u003E 4. Ensuite, on divise par 2 : x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66998,"question":"Vrai ou Faux ? Le périmètre d'un carré de côté 5 cm est 20 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le périmètre d'un carré est 4 × côté. Donc 4 × 5 = 20 cm. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":66999,"question":"Quelle est la valeur de l'expression (a + b)² lorsque a = 2 et b = 3 ?","option_a":"25","option_b":"13","option_c":"15","option_d":"20","option_e":"","option_f":"","bonne_reponse":"A","explication":"En remplaçant a par 2 et b par 3, on obtient (2 + 3)² = 5² = 25.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":67000,"question":"Vrai ou Faux ? La somme des angles d'un triangle est toujours 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 : la somme des angles d'un triangle est toujours 180°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":67001,"question":"Quelle est la solution de l'équation 5(x - 2) = 15 ?","option_a":"x = 5","option_b":"x = 3","option_c":"x = 1","option_d":"x = 7","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 5(x - 2) = 15, on divise par 5 : x - 2 = 3. Ensuite, on ajoute 2 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]