## What is the pattern of geometric sequence?

In mathematics, a geometric progression, also known as a geometric sequence, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio. Similarly 10, 5, 2.5, 1.25, is a geometric sequence with common ratio 1/2.

**How do you find a geometric sequence?**

A geometric sequence goes from one term to the next by always multiplying (or dividing) by the same value. So 1, 2, 4, 8, 16,… is geometric, because each step multiplies by two; and 81, 27, 9, 3, 1, 31 ,… is geometric, because each step divides by 3.

**What is the formula for a finite geometric series?**

The finite geometric series formula is a(1-rⁿ)/(1-r).

### How can you indicate infinite geometric sequence?

You can use sigma notation to represent an infinite series. For example, ∞∑n=110(12)n−1 is an infinite series. The infinity symbol that placed above the sigma notation indicates that the series is infinite. To find the sum of the above infinite geometric series, first check if the sum exists by using the value of r .

**What is the sum of the geometric sequence 4/16 64 If there are 8 terms?**

87380

Answer: The sum of the geometric sequence 4, 16, 64, … if there are 8 terms is 87380.

**What is r in the formula of geometric sequence?**

Recall that a geometric sequence is a sequence in which the ratio of any two consecutive terms is the common ratio, r.

## What is the sum of infinite geometric series?

The formula for the sum of an infinite geometric series is S∞ = a1 / (1-r ).

**What is the example of finite geometric sequence?**

For example, the sequence 1,2,4,8,16,32,… is clearly geometric, as each term is the previous one multiplied by the common ratio, which, in this case, is 2.

**How do you tell if a geometric series is infinite or finite?**

A geometric series is an infinite series whose terms are in a geometric progression, or whose successive terms have a common ratio. If the terms of a geometric series approach zero, the sum of its terms will be finite.

### What is the sum of a 7 term geometric series?

Answer: Hence, the sum of a 7-term geometric series is: -32766.