{"id":57579,"date":"2026-04-30T11:06:08","date_gmt":"2026-04-30T11:06:08","guid":{"rendered":"https:\/\/www.europesays.com\/sk\/57579\/"},"modified":"2026-04-30T11:06:08","modified_gmt":"2026-04-30T11:06:08","slug":"vyrieste-matematicky-rebus-ktory-prave-teraz-nici-socialne-siete","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/sk\/57579\/","title":{"rendered":"Vyrie\u0161te matematick\u00fd r\u00e9bus, ktor\u00fd pr\u00e1ve teraz ni\u010d\u00ed soci\u00e1lne siete"},"content":{"rendered":"

LOND\u00ddN – Na prv\u00fd poh\u013ead jednoduch\u00fd matematick\u00fd r\u00e9bus potr\u00e1pil tis\u00edce \u013eud\u00ed na internete. Hoci m\u00e1 jasn\u00e9 rie\u0161enie, mnoh\u00ed sa nechaj\u00fa nachyta\u0165 na jedinom slove, ktor\u00e9 \u00faplne men\u00ed v\u00fdznam zadania.<\/p>\n

Matematick\u00e9 h\u00e1danky s\u00fa ob\u013e\u00faben\u00fdm sp\u00f4sobom, ako si precvi\u010di\u0165 mozog, no niektor\u00e9 dok\u00e1\u017eu poriadne potr\u00e1pi\u0165 aj t\u00fdch najpozornej\u0161\u00edch. Jedna z nich sa v posledn\u00fdch d\u0148och stala vir\u00e1lnou na soci\u00e1lnych sie\u0165ach a rozdelila \u013eud\u00ed na dva t\u00e1bory \u2013 t\u00fdch, ktor\u00ed ju vyrie\u0161ili okam\u017eite, a t\u00fdch, ktor\u00ed sa nechali nachyta\u0165.<\/p>\n

Autorka h\u00e1danky menom Jenny ju ozna\u010dila za \u201e\u0165a\u017e\u0161iu, ne\u017e sa zd\u00e1\u201c a \u00farove\u0148 n\u00e1ro\u010dnosti op\u00edsala ako maxim\u00e1lnu. Ako p\u00ed\u0161e The Mirror<\/a>, paradoxne v\u0161ak nejde o zlo\u017eit\u00fd pr\u00edklad, ale sk\u00f4r o test pozornosti. Zadanie znie: \u201eSom v\u00e4\u010d\u0161ie ako 5, ale men\u0161ie ako 15. Som delite\u013en\u00e9 iba \u010d\u00edslom 3. Ktor\u00e9 \u010d\u00edslo som?\u201c<\/p>\n

Moment, na ktorom v\u00e4\u010d\u0161ina zlyh\u00e1<\/p>\n

Na prv\u00fd poh\u013ead ide o jednoduch\u00fd v\u00fdber z obmedzen\u00e9ho rozsahu \u010d\u00edsel. Podmienka delite\u013enosti tromi z\u00fa\u017ei mo\u017enosti e\u0161te viac. Pr\u00e1ve tu v\u0161ak prich\u00e1dza moment, na ktorom v\u00e4\u010d\u0161ina \u013eud\u00ed zlyh\u00e1. Mnoh\u00ed v koment\u00e1roch uv\u00e1dzali odpovede 6 alebo 12. Obe \u010d\u00edsla s\u00edce sp\u013a\u0148aj\u00fa podmienku delite\u013enosti tromi, no ignoruj\u00fa k\u013e\u00fa\u010dov\u00e9 slovo \u201eiba\u201c. Pr\u00e1ve to men\u00ed cel\u00e9 zadanie.<\/p>\n

\u010c\u00edslo 6 je toti\u017e delite\u013en\u00e9 aj \u010d\u00edslami 1, 2, 3 a 6, rovnako ako 12 m\u00e1 viac delite\u013eov ne\u017e len trojku. Spr\u00e1vna odpove\u010f je preto 9 \u2013 \u010d\u00edslo, ktor\u00e9 je delite\u013en\u00e9 len \u010d\u00edslami 1, 3 a 9, pri\u010dom trojka je jedin\u00fd \u201ein\u00fd\u201c delite\u013e. H\u00e1danka tak ukazuje, \u017ee nejde len o matematiku, ale aj o schopnos\u0165 \u010d\u00edta\u0165 zadanie pozorne. Pr\u00e1ve drobn\u00e9 detaily toti\u017e \u010dasto rozhoduj\u00fa o spr\u00e1vnom rie\u0161en\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"LOND\u00ddN – Na prv\u00fd poh\u013ead jednoduch\u00fd matematick\u00fd r\u00e9bus potr\u00e1pil tis\u00edce \u013eud\u00ed na internete. Hoci m\u00e1 jasn\u00e9 rie\u0161enie, mnoh\u00ed…\n","protected":false},"author":2,"featured_media":57580,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[23016,23017,8413,33,43,40,42,36,50,49,48],"class_list":{"0":"post-57579","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-svet","8":"tag-hadanka","9":"tag-logika","10":"tag-matematika","11":"tag-news","12":"tag-sk","13":"tag-slovak","14":"tag-slovencina","15":"tag-spravy","16":"tag-svet","17":"tag-world","18":"tag-world-news"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@sk\/116493338681831511","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/57579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=57579"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/57579\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/57580"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=57579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=57579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=57579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}