Resolução das questões de matemática  (Incapel)
Autor: Osmar Lewinski | Publicado: 2011-07-28T22:55:00-07:00

Resolvemos aqui mais 5 questões aplicadas pela empresa Incapel (empresa organizadora do concurso público em Chapecó com data prevista para&nbsp;7/8/2011)
11) (INCAPEL) Em fevereiro de 2010 um funcionário teve um reajuste de 8% em seu salário, que representava um acréscimo de R$ 240,00. Ele ganhava antes do aumento um salário de: (&nbsp;&nbsp; ) a. R$ 2760,00(&nbsp;&nbsp; ) b. R$ 2680,00(&nbsp;&nbsp; ) c. R$ 3200,00(&nbsp;&nbsp; ) d. R$ 3600,00(X) e. R$ 3000,00
Resolução:
12) (INCAPEL) Quinze operários, trabalhando 8 horas por dia, fazem à reforma de um prédio em 50 dias. O número de dias necessários para 20 operários executarem a mesma tarefa trabalhando 6 horas por dia será de: (X) a. 50 dias(&nbsp;&nbsp; ) b. 25 dias(&nbsp;&nbsp; ) c. 30 dias(&nbsp;&nbsp; ) d. 40 dias(&nbsp;&nbsp; ) e. 32 dias
Resolução:
13) (INCAPEL) O total de números com 3 algarismos distintos que podem ser formados, usando os algarismos 2, 3, 4 e 5 é de:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (X) a. 24(&nbsp;&nbsp; ) b. 6(&nbsp;&nbsp; ) c. 12(&nbsp;&nbsp; ) d. 18(&nbsp;&nbsp; ) e. 48
Resolução:14) (INCAPEL) Toda sequência numérica na qual cada termo, a partir do segundo, é igual ao termo anterior multiplicado por uma constante (razão) é chamada de progressão geométrica (P.G.). Numa progressão geométrica crescente, o terceiro termo a3= 45 e o quinto termo a5 = 405. O valor do primeiro termo a1 é igual a:(&nbsp;&nbsp; ) a. 1/5(&nbsp;&nbsp; ) b. 1(&nbsp;&nbsp; ) c. -5(X) d. 5(&nbsp;&nbsp; ) e. 9
Resolução:15) (INCAPEL) (Adaptada) Logaritmo de um número positivo b na base a, com a &gt; 0 e a ≠ o, é o expoente da potência a qual se deve elevar a para se obter b. <shape equationxml="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;yes&quot;?&gt;
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width: 91.5pt;" type="#_x0000_t75">A solução S da equação Logarítmica <shape equationxml="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;yes&quot;?&gt;
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w:h=&quot;15840&quot;/&gt;&lt;w:pgMar w:top=&quot;1417&quot; w:right=&quot;1701&quot; w:bottom=&quot;1417&quot; w:left=&quot;1701&quot; w:header=&quot;720&quot; w:footer=&quot;720&quot; w:gutter=&quot;0&quot;/&gt;&lt;w:cols w:space=&quot;720&quot;/&gt;&lt;/w:sectPr&gt;&lt;/w:body&gt;&lt;/w:wordDocument&gt;" id="_x0000_i1028" style="height: 15pt; width: 84.75pt;" type="#_x0000_t75">&nbsp;é:(&nbsp;&nbsp; ) a. -3(X) b. 4(&nbsp;&nbsp; ) c. 3/4(&nbsp;&nbsp; ) d. 1(&nbsp;&nbsp; ) e. 0
Resolução: