# Calculus, series

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I cannot figure this out!

What is the series (the Pattern) of this sequence?

{1,5,1,5,1,5,1,5.......}

• Calculus, series -

That is a sequence, not a series.
A sequence is an ordered list of terms.
A series is a sum of terms, which may be terms in a sequence.
so
1,5,1,5,1,5..... is a sequence
but
1+5+1+5+1+5..... would be a series

the pattern of your sequence could be said to be alternating 1 and 5

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