{"id":42895,"date":"2026-10-03T03:29:02","date_gmt":"2026-10-03T03:29:02","guid":{"rendered":"https:\/\/harissa.com\/news-wp\/?p=42895"},"modified":"2026-10-03T03:29:02","modified_gmt":"2026-10-03T03:29:02","slug":"la-beaute-des-maths","status":"publish","type":"post","link":"https:\/\/harissa.com\/news-wp\/la-beaute-des-maths\/","title":{"rendered":"La beaute des Maths"},"content":{"rendered":"<div>\n<div>\n<div>\n<div>\n<div>\n<\/div><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<hr\/>\n<div>\n<div>\n<div>\n<p> 1 x 8 + 1 = 9<br \/> 12 x 8 + 2 = 98<br \/> 123 x 8 + 3 = 987<br \/> 1234 x 8 + 4 = 9876<br \/> 12345 x 8 + 5 = 98765<br \/> 123456 x 8 + 6 = 987654<br \/> 1234567 x 8 + 7 = 9876543<br \/> 12345678 x 8 + 8 = 98765432<br \/> 123456789 x 8 + 9 = 987654321<\/p>\n<p> 1 x 9 + 2 = 11<br \/> 12 x 9 + 3 = 111<br \/> 123 x 9 + 4 = 1111<br \/> 1234 x 9 + 5 = 11111<br \/> 12345 x 9 + 6 = 111111<br \/> 123456 x 9 + 7 = 1111111<br \/> 1234567 x 9 + 8 = 11111111<br \/> 12345678 x 9 + 9 = 111111111<br \/> 123456789 x 9 +10= 1111111111<\/p>\n<p> 9 x 9 + 7 = 88<br \/> 98 x 9 + 6 = 888<br \/> 987 x 9 + 5 = 8888<br \/> 9876 x 9 + 4 = 88888<br \/> 98765 x 9 + 3 = 888888<br \/> 987654 x 9 + 2 = 8888888<br \/> 9876543 x 9 + 1 = 88888888<br \/> 98765432 x 9 + 0 = 888888888<\/p>\n<p> Brilliant, n&rsquo;est-ce pas ?<\/p>\n<p> Et maintenant regardez la symetrie:<\/p>\n<p> 1 x 1 = 1<br \/> 11 x 11 = 121<br \/> 111 x 111 = 12321<br \/> 1111 x 1111 = 1234321<br \/> 11111 x 11111 = 123454321<br \/> 111111 x 111111 = 12345654321<br \/> 1111111 x 1111111 = 1234567654321<br \/> 11111111 x 11111111 = 123456787654321<br \/> 111111111 x 111111111=12345678987654321<\/p>\n<p> <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<hr\/>\n<blockquote>\n<blockquote><\/blockquote>\n<\/blockquote>\n<h6><\/h6>\n","protected":false},"excerpt":{"rendered":"<p>1 x 8 + 1 = 9 12 x 8 + 2 = 98 123 x 8 + 3 = 987 1234 x 8 + 4 = 9876 12345 x 8 + 5 = 98765 123456 x 8 + 6 = 987654 1234567 x 8 + 7 = 9876543 12345678 x 8 + 8 =&hellip;&nbsp;<\/p>\n","protected":false},"author":1880,"featured_media":56356,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[34,17],"tags":[],"class_list":["post-42895","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-souvenirs"],"_links":{"self":[{"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/posts\/42895","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/users\/1880"}],"replies":[{"embeddable":true,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/comments?post=42895"}],"version-history":[{"count":1,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/posts\/42895\/revisions"}],"predecessor-version":[{"id":47968,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/posts\/42895\/revisions\/47968"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/media\/56356"}],"wp:attachment":[{"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/media?parent=42895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/categories?post=42895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/harissa.com\/news-wp\/wp-json\/wp\/v2\/tags?post=42895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}