Quiz — 6435393218f82_Corrigé-Nombres premiers«série d’exercices».pdf

Question 1 sur 10 20:00

[{"id":27900,"question":"Parmi les nombres suivants, lequel est un nombre premier ?","option_a":"15","option_b":"17","option_c":"21","option_d":"25","option_e":"","option_f":"","bonne_reponse":"b","explication":"17 est le seul nombre premier de la liste car il n'est divisible que par 1 et par lui-même.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"15\", \"b\": \"17\", \"c\": \"21\", \"d\": \"25\"}}","_debug_options_count":4},{"id":27901,"question":"Le nombre 51 est-il un nombre premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"51 n'est pas un nombre premier car il est divisible par 3 (51 = 3 × 17).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":27902,"question":"Quel est le plus petit nombre premier supérieur à 20 ?","option_a":"21","option_b":"23","option_c":"25","option_d":"27","option_e":"","option_f":"","bonne_reponse":"b","explication":"23 est le plus petit nombre premier supérieur à 20 car il n'est divisible que par 1 et par lui-même.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"21\", \"b\": \"23\", \"c\": \"25\", \"d\": \"27\"}}","_debug_options_count":4},{"id":27903,"question":"La décomposition en facteurs premiers de 60 est :","option_a":"2 × 3 × 5","option_b":"2² × 3 × 5","option_c":"2 × 3² × 5","option_d":"2³ × 3 × 5","option_e":"","option_f":"","bonne_reponse":"b","explication":"60 = 2 × 2 × 3 × 5 = 2² × 3 × 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"2 × 3 × 5\", \"b\": \"2² × 3 × 5\", \"c\": \"2 × 3² × 5\", \"d\": \"2","_debug_options_count":4},{"id":27904,"question":"Un nombre pair peut-il être un nombre premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un nombre pair est divisible par 2, donc le seul nombre premier pair est 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":27905,"question":"Quel est le seul nombre premier pair ?","option_a":"0","option_b":"1","option_c":"2","option_d":"4","option_e":"","option_f":"","bonne_reponse":"c","explication":"2 est le seul nombre premier pair car il n'est divisible que par 1 et par lui-même.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"0\", \"b\": \"1\", \"c\": \"2\", \"d\": \"4\"}}","_debug_options_count":4},{"id":27906,"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 est un 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,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":27907,"question":"Parmi les nombres suivants, lequel n'est PAS un nombre premier ?","option_a":"31","option_b":"37","option_c":"41","option_d":"49","option_e":"","option_f":"","bonne_reponse":"d","explication":"49 n'est pas un nombre premier car il est divisible par 7 (49 = 7 × 7).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"d\", \"options\": {\"a\": \"31\", \"b\": \"37\", \"c\": \"41\", \"d\": \"49\"}}","_debug_options_count":4},{"id":27908,"question":"La décomposition en facteurs premiers de 84 est :","option_a":"2 × 3 × 7","option_b":"2² × 3 × 7","option_c":"2² × 3² × 7","option_d":"2³ × 3 × 7","option_e":"","option_f":"","bonne_reponse":"b","explication":"84 = 2 × 2 × 3 × 7 = 2² × 3 × 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"2 × 3 × 7\", \"b\": \"2² × 3 × 7\", \"c\": \"2² × 3² × 7\", \"d\": ","_debug_options_count":4},{"id":27909,"question":"Tous les nombres impairs sont-ils des nombres premiers ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Non, tous les nombres impairs ne sont pas des nombres premiers. Par exemple, 9 est impair mais n'est pas premier (9 = 3 × 3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]