{"id":23712,"date":"2026-08-09T23:54:52","date_gmt":"2026-08-09T23:54:52","guid":{"rendered":"https:\/\/ideerepas.milaf.ma\/?p=23712"},"modified":"2026-08-09T23:54:52","modified_gmt":"2026-08-09T23:54:52","slug":"90-des-gens-repondent-35-et-se-trompent-quelle-est-la-vraie-reponse-3","status":"publish","type":"post","link":"https:\/\/ideerepas.milaf.ma\/?p=23712","title":{"rendered":"90% des gens r\u00e9pondent \u201c35\u201d et se trompent ! Quelle est la vraie r\u00e9ponse ?"},"content":{"rendered":"<h1 data-path-to-node=\"3\">\ud83e\udde0\u00a0L\u2019\u00c9nigme des \u00c2ges qui Rend Fou : Pourquoi 90% des adultes se trompent sur ce calcul simple<\/h1>\n<h2 data-path-to-node=\"8\">\ud83d\udd0d\u00a0Rappel de l\u2019\u00e9nigme<\/h2>\n<p data-path-to-node=\"9\">Pour bien comprendre, relisons attentivement l\u2019\u00e9nonc\u00e9 qui a \u00e9t\u00e9 partag\u00e9 :<\/p>\n<blockquote data-path-to-node=\"10\">\n<p data-path-to-node=\"10,0\"><i data-path-to-node=\"10,0\" data-index-in-node=\"0\">\u201cQuand j\u2019avais 6 ans, ma s\u0153ur avait la moiti\u00e9 de mon \u00e2ge. Aujourd\u2019hui j\u2019ai 70 ans, quel \u00e2ge a ma s\u0153ur ?\u201d<\/i><\/p>\n<\/blockquote>\n<p data-path-to-node=\"11\">Si l\u2019on va trop vite, notre cerveau fait un calcul automatique et ultra-rapide :<\/p>\n<ol start=\"1\" data-path-to-node=\"12\">\n<li>\n<p data-path-to-node=\"12,0,0\">La moiti\u00e9 de 70, c\u2019est 35.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"12,1,0\">Donc, la s\u0153ur a 35 ans.<\/p>\n<\/li>\n<\/ol>\n<p data-path-to-node=\"13\"><b data-path-to-node=\"13\" data-index-in-node=\"0\">Et c\u2019est une erreur totale !<\/b>\u00a0Si vous avez r\u00e9pondu 35, vous \u00eates tomb\u00e9 en plein dans le panneau. Mais ne vous inqui\u00e9tez pas, c\u2019est exactement le comportement que l\u2019\u00e9nigme cherche \u00e0 provoquer chez vous.<\/p>\n<h2 data-path-to-node=\"15\">\ud83d\udca1\u00a0La solution expliqu\u00e9e pas \u00e0 pas<\/h2>\n<p data-path-to-node=\"16\">Pour trouver le bon r\u00e9sultat, il ne faut pas chercher la moiti\u00e9 de l\u2019\u00e2ge d\u2019aujourd\u2019hui, mais la\u00a0<b data-path-to-node=\"16\" data-index-in-node=\"96\">diff\u00e9rence d\u2019\u00e2ge permanente<\/b>\u00a0entre les deux personnes. Le temps passe de la m\u00eame vitesse pour tout le monde !<\/p>\n<p data-path-to-node=\"17\">Reprenons depuis le d\u00e9but :<\/p>\n<ul data-path-to-node=\"18\">\n<li>\n<p data-path-to-node=\"18,0,0\"><b data-path-to-node=\"18,0,0\" data-index-in-node=\"0\">\u00c9tape 1 :<\/b>\u00a0Quand le narrateur avait\u00a0<b data-path-to-node=\"18,0,0\" data-index-in-node=\"35\">6 ans<\/b>, sa s\u0153ur avait la moiti\u00e9 de son \u00e2ge. La moiti\u00e9 de 6, c\u2019est\u00a0<b data-path-to-node=\"18,0,0\" data-index-in-node=\"100\">3 ans<\/b>. La s\u0153ur avait donc 3 ans.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"18,1,0\"><b data-path-to-node=\"18,1,0\" data-index-in-node=\"0\">\u00c9tape 2 :<\/b>\u00a0Quelle est la diff\u00e9rence d\u2019\u00e2ge entre eux ?\u00a0<span class=\"math-inline\" data-math=\"6 - 3 = 3\" data-index-in-node=\"53\">$6 \u2013 3 = 3$<\/span>\u00a0ans. La s\u0153ur a donc pr\u00e9cis\u00e9ment\u00a0<b data-path-to-node=\"18,1,0\" data-index-in-node=\"95\">3 ans de moins<\/b>\u00a0que le narrateur.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"18,2,0\"><b data-path-to-node=\"18,2,0\" data-index-in-node=\"0\">\u00c9tape 3 :<\/b>\u00a0Cette diff\u00e9rence d\u2019\u00e2ge ne changera jamais, tout au long de leur vie. S\u2019ils vieillissent, ils vieillissent ensemble !<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"18,3,0\"><b data-path-to-node=\"18,3,0\" data-index-in-node=\"0\">\u00c9tape 4 :<\/b>\u00a0Aujourd\u2019hui, le narrateur a\u00a0<b data-path-to-node=\"18,3,0\" data-index-in-node=\"38\">70 ans<\/b>. Puisque sa s\u0153ur a toujours 3 ans de moins que lui, il suffit de faire une simple soustraction :<\/p>\n<div data-path-to-node=\"18,3,1\">\n<div class=\"math-block\" data-math=\"70 - 3 = 67\">$$70 \u2013 3 = 67$$<\/div>\n<\/div>\n<\/li>\n<\/ul>\n<h3 data-path-to-node=\"19\">\ud83c\udf89\u00a0La r\u00e9ponse correcte est donc : 67 ans !<\/h3>\n<h2 data-path-to-node=\"21\">\ud83e\udde0\u00a0Pourquoi notre cerveau tombe-t-il si facilement dans le panneau ?<\/h2>\n<p data-path-to-node=\"22\">Ce genre de post devient instantan\u00e9ment viral sur Facebook parce qu\u2019il exploite un m\u00e9canisme psychologique bien connu :\u00a0<b data-path-to-node=\"22\" data-index-in-node=\"120\">le raccourci mental<\/b>\u00a0(ou heuristique).<\/p>\n<p data-path-to-node=\"23\">Dans l\u2019\u00e9nonc\u00e9, le mot\u00a0<i data-path-to-node=\"23\" data-index-in-node=\"22\">\u201cla moiti\u00e9\u201d<\/i>\u00a0est fortement associ\u00e9 au premier chiffre (<i data-path-to-node=\"23\" data-index-in-node=\"76\">6 ans<\/i>). Lorsque l\u2019\u00e9nigme saute brusquement \u00e0 l\u2019\u00e2ge adulte (<i data-path-to-node=\"23\" data-index-in-node=\"135\">70 ans<\/i>), le cerveau, feignant par nature, tente de r\u00e9appliquer la m\u00eame formule (\u201cla moiti\u00e9\u201d) au nouveau chiffre. Il calcule\u00a0<span class=\"math-inline\" data-math=\"70 \\div 2\" data-index-in-node=\"259\">$70 \\div 2$<\/span> au lieu de calculer l\u2019\u00e9cart entre les deux personnes.<\/p>\n<div class=\"google-auto-placed ap_container\"><ins class=\"adsbygoogle adsbygoogle-noablate\" data-ad-format=\"auto\" data-ad-client=\"ca-pub-3681795799478137\" data-adsbygoogle-status=\"done\" data-ad-status=\"unfill-optimized\"><\/p>\n<div id=\"aswift_4_host\">\n<div class=\"google-aiuf\" data-google-ad-efd=\"true\">\n<div class=\"goog-rentries\">\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/ins><\/div>\n<p data-path-to-node=\"24\">C\u2019est une excellente preuve que la vitesse est souvent l\u2019ennemie de la logique !<\/p>\n<p data-path-to-node=\"25\">Alors, aviez-vous trouv\u00e9 les\u00a0<b data-path-to-node=\"25\" data-index-in-node=\"29\">67 ans<\/b>\u00a0du premier coup ou aviez-vous cri\u00e9 \u201c35\u201d ? Partagez cette \u00e9nigme avec vos coll\u00e8gues ou votre famille pour voir qui tombera dans le pi\u00e8ge !<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83e\udde0\u00a0L\u2019\u00c9nigme des \u00c2ges qui Rend Fou : Pourquoi 90% des adultes se trompent sur ce calcul simple \ud83d\udd0d\u00a0Rappel de l\u2019\u00e9nigme&hellip;<\/p>\n","protected":false},"author":1,"featured_media":23713,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-23712","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/posts\/23712","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=23712"}],"version-history":[{"count":1,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/posts\/23712\/revisions"}],"predecessor-version":[{"id":23714,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/posts\/23712\/revisions\/23714"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=\/wp\/v2\/media\/23713"}],"wp:attachment":[{"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=23712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=23712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ideerepas.milaf.ma\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=23712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}