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  • 23-02-2017
  • Mathematics
Answered

What is the general rule for the arithmetic sequence? 15, 12, 9, 6, …

Verified Answer :

Anonymous Anonymous
  • 23-02-2017

15, 12, 9, 6, …

here first term (a)= 15
common difference (d) = 12-15 = 33

The nth term is given by

\(a_n=a+(n-1)d\ = 15 + (n-1)(-3)=\boxed{18-3n}\)

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