Quiz : Maîtrisez les nombres premiers et la factorisation !

Question 1 sur 10 10:00

[{"id":11598,"question":"Quel est le plus petit nombre premier ?","option_a":"0","option_b":"1","option_c":"2","option_d":"3","option_e":"","option_f":"","bonne_reponse":"C","explication":"Le nombre 2 est le plus petit nombre premier car il n'est divisible que par 1 et par lui-même.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11599,"question":"Le nombre 15 est-il un nombre premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"15 n'est pas un nombre premier car il est divisible par 1, 3, 5 et 15.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11600,"question":"Quelle est la factorisation en nombres premiers de 24 ?","option_a":"2 × 3","option_b":"2 × 2 × 2 × 3","option_c":"3 × 8","option_d":"2 × 12","option_e":"","option_f":"","bonne_reponse":"B","explication":"24 = 2 × 2 × 2 × 3, ce qui correspond à la décomposition en facteurs premiers.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11601,"question":"Le nombre 77 est-il divisible par 7 ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"77 ÷ 7 = 11, donc 77 est divisible par 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11602,"question":"Quel est le PGCD de 12 et 18 ?","option_a":"2","option_b":"3","option_c":"6","option_d":"12","option_e":"","option_f":"","bonne_reponse":"C","explication":"La factorisation de 12 est 2² × 3 et celle de 18 est 2 × 3². Le PGCD est donc 2 × 3 = 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11603,"question":"Le nombre 97 est-il un nombre premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"97 n'a pas d'autres diviseurs que 1 et 97, donc c'est un nombre premier.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11604,"question":"Quelle est la factorisation en nombres premiers de 45 ?","option_a":"3 × 15","option_b":"3 × 3 × 5","option_c":"5 × 9","option_d":"3 × 5 × 5","option_e":"","option_f":"","bonne_reponse":"B","explication":"45 = 3 × 3 × 5, ce qui correspond à la décomposition en facteurs premiers.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11605,"question":"Le nombre 100 est-il divisible par 4 ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"100 ÷ 4 = 25, donc 100 est divisible par 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11606,"question":"Quel est le PPCM de 6 et 8 ?","option_a":"12","option_b":"24","option_c":"48","option_d":"16","option_e":"","option_f":"","bonne_reponse":"B","explication":"La factorisation de 6 est 2 × 3 et celle de 8 est 2³. Le PPCM est donc 2³ × 3 = 24.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11607,"question":"Le nombre 1 est-il considéré comme un nombre premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Par définition, un nombre premier doit avoir exactement deux diviseurs distincts. Le nombre 1 n'en a qu'un seul.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]