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1 vote
Is the following sequence geometric? If so, what is the common ratio?
1, 3, 6, 18, 36, ...

User Miff
by
5.4k points

2 Answers

5 votes

Answer:

Yes

Explanation:

Multiply 1 by 3 (1.3=3) Then the result you multiply by 2 (you alternate multiplying by 3 then by 2 then by 3........

1 * 3 = 3

3 * 2 = 6

6 * 3 = 18

18 * 2 = 36

User Astropanic
by
5.4k points
5 votes

Answer:

No

Explanation:

For the sequence to be geometric a common ratio r must exist between consecutive terms.

3 ÷ 1 = 3

6 ÷ 3 = 2

18 ÷ 6 = 3

36 ÷ 18 = 2

The ratio between consecutive terms is not equal thus not geometric.

User HeyYO
by
5.7k points