Question

State a and d for the arithmetic sequence below:
1, 3, 5, 7...

a=

d=

Answer 1

• a = 1
• d = 2

Explanation:

You want the first term (a) and the common difference (d) of the arithmetic sequence that starts 1, 3, 5, 7, ...

First term

The first term (a) is the first one listed:

a = 1

Difference

The common difference is the difference between the second term and the first term:

d = 3 - 1 = 2

The first term is a = 1, and the common difference is d = 2.

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