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Q: Can an arithmetic sequence be odd?

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It is an arithmetic sequence for which the index goes on and on (and on).

An arithmetic sequence is a list of numbers which follow a rule. A series is the sum of a sequence of numbers.

No.

That's an arithmetic sequence.

Arithmetic

It is the start of an arithmetic sequence.

The set of odd numbers is an arithmetic sequence. Let say that the sequence has n odd numbers where the first term is a1 and the last one is n. The formula to find the sum on nth terms for an arithmetic sequence is: Sn = (n/2)(a1 + an) or Sn = (n/2)[2a1 + (n - 1)d] where d is the common difference that for odd numbers is 2. Sn = (n/2)(2a1 + 2n - 2)

Any pair of numbers will always form an arithmetic sequence.

The 90th term of the arithmetic sequence is 461

1,6,11,16,21,26

No. An 'arithmetic' sequence is defined as one with a common difference.A sequence with a common ratio is a geometricone.

It is an arithmetic sequence if you can establish that the difference between any term in the sequence and the one before it has a constant value.

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