Which sequence are geometric? check all that apply

The sequences are geometric,

10, 7.5, 5.625, 4.28175,

160, 40, 10, 2.5,

20, 70, 245, 857.5,

20, 70, 245, 857.5

5, 5.5, 6.05, 6.655

We have to determine, which sequences of the following series are geometric,

According to the question,

A geometric sequence is a sequence in which any element after the first is obtained by multiplying the preceding element by a constant called the common ratio which is denoted by r.

To find the geometric series by using a formula follow all the steps given below.

Here,

If a, b, c, d, e ............ are in geometric progression.

Then,

The series is geometric.

The given series is 10, 7.5, 5.625, 4.28175,

Then,

Therefore, The series is geometric.

The given series is 160, 40, 10, 2.5,

Then,

Therefore, The series is geometric.

The given series is 20, 70, 245, 857.5,

Then,

Therefore, The series is geometric.

The given series is 13, 16.5, 20, 23.5,

Then,

Therefore, The series is not geometric.

The given series is 5, 5.5, 6.05, 6.655

Then,

Therefore, The series is geometric.

The given series is 16, 17, 18.2, 19.3,

Then,

Therefore, The series not is geometric.

To know more about the Series click the link given below.

link

10, 7.5, 5.625, 4.21875, ...160, 40, 10, 2.5, ...20, 70, 245, 857.5, ...5, 5.5, 6.05, 6.655, ...

Step-by-step explanation:

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The answer is 60.9774