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Which of the following is an arithmetic sequence?
A. 0-2, 4, -6,8,...
B. -8.-6.-4.-2....
C. 2,4, 8, 16, ...

Sagot :

[tex]-8~~,~~\stackrel{-8+2}{-6}~~,~~\stackrel{-6+2}{-4}~~,~~\stackrel{-4+2}{-2}\qquad \begin{cases} a_1=-8\\ d = +2 \end{cases}[/tex]