Finding Arithmetic Sequences

Which of the following is an example of an arithmetic sequence?

• 4, 8, 16, 32, 64

• 1, 2, 4, 7, 11

• 15, 13, 11, 9, 7

• 3, 6, 12, 24, 48

Which of the following is the correct formula in finding the nth term of an arithmetic sequence?

• a_n = a₁ + (n - 1)d

• a_n = a₁ + (n + 1)d

• a_n = a₁ - (n - 1)d

• a_n = a₁ +- (n + 1)d

In the sequence 9, 18, 27, 36 and so on, what is the common difference?

• 5

• 7

• 9

• 11

If the sequence 6, 11, 16, 21 continues, what will be the 9^th term?

• 315

• 330

• 345

• 360

The difference between two terms in an arithmetic sequence is called ___________________.

• Formula

• Common Ratio

• Common Difference

• Common Factor

If the sequence 4, 8, 12, 16 continues, what will be the 7^th term?

• 24

• 28

• 32

• 36

Determine the next term in the sequence 20, 8, -4, ...

What is the next term in the sequence 11, 25, 39, ...?

What is the common difference in the sequence 6b, 9b, 12b, 15b?