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<title>Scientia QA - Intrebari recente cu tag-ul divizibilitate</title>
<link>https://www.scientia.ro/qa/tag/divizibilitate</link>
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<item>
<title>Cum demonstram pe intelesul celor de clasa a 6a...</title>
<link>https://www.scientia.ro/qa/16514/cum-demonstram-pe-intelesul-celor-de-clasa-a-6a</link>
<description>Sa demonstram ca&lt;br /&gt;
&lt;br /&gt;
[21^n+23^n-2^(2n)+2^(n+1)*3^2]/38 apartine multimii numerelor naturale, oricare ar fi n natural nenul.&lt;br /&gt;
&lt;br /&gt;
Scuze, am scris eu gresit era 21, nu 12</description>
<category>Matematica</category>
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<pubDate>Sun, 23 Jun 2013 16:05:18 +0000</pubDate>
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<item>
<title>Cum demonstrăm că numărul 10^n + 18n – 28 este divizibil cu 27, pentru orice n număr natural, n&gt;0?</title>
<link>https://www.scientia.ro/qa/9291/cum-demonstram-ca-numarul-10-n-18n-28-este-divizibil-cu-27-pentru-orice-n-numar-natural-n-0</link>
<description></description>
<category>Matematica</category>
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<pubDate>Wed, 15 Aug 2012 08:28:03 +0000</pubDate>
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<title>Care este cel mai mare numar natural prin care poate fi simplificata o fractie de forma (5a + 7)/(2a - 3)?</title>
<link>https://www.scientia.ro/qa/8203/care-este-cel-mai-mare-numar-natural-prin-care-poate-fi-simplificata-o-fractie-de-forma-5a-7-2a-3</link>
<description>a este un numar natural. Exercitiul a fost propus la concursul &amp;#039;Olimpicii Cunoasterii&amp;#039;, cl. a VI-a, 2012.</description>
<category>Matematica</category>
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<pubDate>Sun, 01 Jul 2012 07:45:58 +0000</pubDate>
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