{"id":6989,"date":"2011-10-09T21:06:26","date_gmt":"2011-10-09T20:06:26","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=6989"},"modified":"2022-01-25T13:25:26","modified_gmt":"2022-01-25T13:25:26","slug":"para-jogar-no-totobola","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=6989","title":{"rendered":"Para jogar no totobola"},"content":{"rendered":"<p><ul id='GTTabs_ul_6989' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_6989' class='GTTabs_curr'><a  id=\"6989_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_6989' ><a  id=\"6989_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_6989'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/10\/dado1x2d.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" title=\"Dado\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/10\/dado1x2d.png\" alt=\"\" width=\"124\" height=\"164\" \/><\/a>Para jogar no totobola, o Jo\u00e3o arranjou um dado e marcou as faces com os s\u00edmbolos habituais, do seguinte modo:<\/p>\n<p style=\"text-align: center;\"><strong>1\u00a0\u00a0\u00a0\u00a0\u00a0x\u00a0\u00a0\u00a0\u00a0 2\u00a0\u00a0\u00a0 \u00a01\u00a0\u00a0 \u00a0 1\u00a0\u00a0 \u00a0 2<\/strong><\/p>\n<ol>\n<li>Supondo que o dado continuava equilibrado, qual \u00e9 a probabilidade de, num lan\u00e7amento, sair:<br \/>\na) &#8220;Vit\u00f3ria em casa&#8221;;<br \/>\nb) &#8220;Empate&#8221;;<br \/>\nc) &#8220;Vit\u00f3ria fora de casa&#8221;?<\/li>\n<li>Suponha que, em vez de um, o Jo\u00e3o lan\u00e7a dois dados nas mesmas condi\u00e7\u00f5es.<br \/>\nQual \u00e9 a probabilidade de sair:<br \/>\na) &#8220;xx&#8221;;<br \/>\nb) &#8220;11&#8221;;<br \/>\nc) &#8220;22&#8221;;<br \/>\nd) &#8220;12&#8221;?<\/li>\n<li>Suponha agora que ele lan\u00e7a tr\u00eas dados nas mesmas condi\u00e7\u00f5es.<br \/>\nQual \u00e9 a probabilidade de sair:<br \/>\na) &#8220;xxx&#8221;;<br \/>\nb) &#8220;111&#8221;;<br \/>\nc) &#8220;222&#8221;?<\/li>\n<\/ol>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_6989' onClick='GTTabs_show(1,6989)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_6989'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<ol>\n<li><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/10\/dado1x2d.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" title=\"Dado\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/10\/dado1x2d.png\" alt=\"\" width=\"124\" height=\"164\" \/><\/a>Nesta experi\u00eancia existem 6 resultados poss\u00edveis equiprov\u00e1veis: <span style=\"background-color: #00ffff;\">1<\/span>, <span style=\"background-color: #00ff00;\">1<\/span>, <span style=\"background-color: #ff0000;\">1<\/span>, <span style=\"background-color: #ff0000;\">x<\/span>, <span style=\"background-color: #00ffff;\">2<\/span>, <span style=\"background-color: #00ff00;\">2<\/span>.\n<p><strong>a)<\/strong><br \/>\nExistem 3 resultados favor\u00e1veis ao acontecimento &#8220;Vit\u00f3ria em casa&#8221;: <span style=\"background-color: #00ffff;\">1<\/span>, <span style=\"background-color: #00ff00;\">1<\/span>, <span style=\"background-color: #ff0000;\">1<\/span>.<br \/>\nLogo, $p(\\text{&#8221;Vit }\\!\\!\\acute{\\mathrm{o}}\\!\\!\\text{ ria em casa&#8221;})=\\frac{3}{6}=\\frac{1}{2}$.<\/p>\n<p><strong>b)<\/strong><br \/>\nExiste apenas 1 resultado favor\u00e1vel ao acontecimento &#8220;Empate&#8221;: <span style=\"background-color: #ff0000;\">x<\/span>.<br \/>\nLogo, $p(\\text{&#8221;Empate&#8221;})=\\frac{1}{6}$.<\/p>\n<p><strong>c)<\/strong><br \/>\nExistem 2 resultados favor\u00e1veis ao acontecimento &#8220;Vit\u00f3ria fora de casa&#8221;: <span style=\"background-color: #00ffff;\">2<\/span>, <span style=\"background-color: #00ff00;\">2<\/span>.<br \/>\nLogo, $p(\\text{&#8221;Vit }\\!\\!\\acute{\\mathrm{o}}\\!\\!\\text{ ria fora de casa&#8221;})=\\frac{2}{6}=\\frac{1}{3}$.<br \/>\n\u00ad<\/p>\n<\/li>\n<li>Nesta experi\u00eancia existem $6\\times 6=36$ resultados poss\u00edveis equiprov\u00e1veis.<br \/>\nPara facilitar a contagem dos resultados favor\u00e1veis, comecemos por construir uma tabela de dupla entrada.<\/p>\n<table class=\"aligncenter\" style=\"width: 50%;\" border=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ffff;\">1<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ff00;\">1<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #ff0000;\">1<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #ff0000;\">x<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ffff;\">2<\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ff00;\">2<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ffff;\">1<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">1<\/span>,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ff00;\">1<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">1<\/span>,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #ff0000;\">1<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">1<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">1<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">1<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">1<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">1<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(1,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #ff0000;\">x<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">x<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">x<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">x<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">x<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #ff0000;\">x<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(x,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ffff;\">2<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ffff;\">2<\/span>,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><span style=\"background-color: #00ff00;\">2<\/span><\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #00ffff;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #00ff00;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #ff0000;\">1<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #ff0000;\">x<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #00ffff;\">2<\/span>)<\/td>\n<td style=\"text-align: center;\">(<span style=\"background-color: #00ff00;\">2<\/span>,<span style=\"background-color: #00ff00;\">2<\/span>)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>a)<\/strong><br \/>\nExiste apenas\u00a0$1\\times 1=1$ resultado favor\u00e1vel ao acontecimento &#8220;xx&#8221;.<br \/>\nLogo, $p(\\text{&#8221;xx&#8221;})=\\frac{1}{36}$.<\/p>\n<p><strong>b)<\/strong><br \/>\nExistem $3\\times 3=9$ resultados favor\u00e1veis ao acontecimento &#8220;11&#8221;.<br \/>\nLogo, $p(\\text{&#8221;11&#8221;})=\\frac{9}{36}=\\frac{1}{4}$.<\/p>\n<p><strong>c)<\/strong><br \/>\nExistem $2\\times 2=4$ resultados favor\u00e1veis ao acontecimento &#8220;22&#8221;.<br \/>\nLogo, $p(\\text{&#8221;22&#8221;})=\\frac{4}{36}=\\frac{1}{9}$.<\/p>\n<p><strong>d)<\/strong><br \/>\nExistem $3\\times 2=6$ resultados favor\u00e1veis ao acontecimento &#8220;12&#8221;.<br \/>\nLogo, $p(\\text{&#8221;12&#8221;})=\\frac{6}{36}=\\frac{1}{6}$.<br \/>\n\u00ad<\/p>\n<\/li>\n<li>Nesta experi\u00eancia existem $6\\times 6\\times 6=216$ resultados poss\u00edveis equiprov\u00e1veis, pois em cada um dos dados ocorrem 6 resultados poss\u00edveis.\n<p><strong>a)<\/strong><br \/>\nExiste apenas $1\\times 1\\times 1=1$ resultado favor\u00e1vel ao acontecimento &#8220;xxx&#8221;, pois o resultado &#8220;x&#8221; apenas ocorre uma vez em cada um dos dados.<br \/>\nLogo, $p(\\text{&#8221;xxx&#8221;})=\\frac{1}{216}$.<\/p>\n<p><strong>b)<\/strong><br \/>\nExistem $3\\times 3\\times 3=27$ resultados favor\u00e1veis ao acontecimento &#8220;111&#8221;, pois o resultado &#8220;1&#8221; pode ocorrer de tr\u00eas modos fierentes em cada um dos dados.<br \/>\nLogo, $p(\\text{&#8221;111&#8221;})=\\frac{27}{216}=\\frac{1}{8}$.<\/p>\n<p><strong>c)<\/strong><br \/>\nExistem $2\\times 2\\times 2=8$ resultados favor\u00e1veis ao acontecimento &#8220;222&#8221;, pois o resultado &#8220;2&#8221; pode ocorrer de dois modos diferentes em cada um dos dados.<br \/>\nLogo, $p(\\text{&#8221;222&#8221;})=\\frac{8}{216}=\\frac{1}{27}$.<\/p>\n<\/li>\n<\/ol>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_6989' onClick='GTTabs_show(0,6989)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Para jogar no totobola, o Jo\u00e3o arranjou um dado e marcou as faces com os s\u00edmbolos habituais, do seguinte modo: 1\u00a0\u00a0\u00a0\u00a0\u00a0x\u00a0\u00a0\u00a0\u00a0 2\u00a0\u00a0\u00a0 \u00a01\u00a0\u00a0 \u00a0 1\u00a0\u00a0 \u00a0 2 Supondo que o dado&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":20959,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[226,97,227],"tags":[427,217,216,215],"series":[],"class_list":["post-6989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-12--ano","category-aplicando","category-probabilidades-e-combinatoria","tag-12-o-ano","tag-acontecimento","tag-espaco-de-resultados","tag-probabilidade"],"views":3484,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/10\/12V1Pag165-6_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/6989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6989"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/6989\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/20959"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6989"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=6989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}