[tex]\bf \textit{arithmetic sequence}
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2,~~\stackrel{2+3}{5},~~\stackrel{5+3}{8},~~\stackrel{8+3}{11},...
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5-2\implies \stackrel{\stackrel{common}{difference}}{3}\qquad \qquad 8-5\implies \stackrel{\stackrel{common}{difference}}{3}
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11-8\implies \stackrel{\stackrel{common}{difference}}{3}[/tex]