This is a geometric progression with a factor of -10, so 0.562.
It is a geometric progression with common ratio 0.5
15. It's a Geometric Progression with a Common Ratio of 1/5 (or 0.2).
Sounds like a Geometric Progression eg 1-3-9-27-81 etc
Yes, that's what a geometric sequence is about.
No.
There are different answers depending upon whether the sequence is an arithmetic progression, a geometric progression, or some other sequence. For example, the sequence 4/1 - 4/3 + 4/5 - 4/7 adds to pi
This is a geometric progression with a factor of -10, so 0.562.
It is not possible to explain because you have not specified the nature of the sequence. A sequence can be an arithmetic, or geometric progression, increasing or decreasing. Or it can be a polynomial or power progression, again increasing or decreasing. Or it can be a sequence of random numbers.
Geology, Geography, Geometry, Gems, Gold, Gadolinium, Gallium, Germanium, Graduated Cylinder, Gametes, Gauges, Geotropism, Gigabytes, Gigapascal, Gluon, and Gravity.
The geometric series is, itself, a sum of a geometric progression. The sum of an infinite geometric sequence exists if the common ratio has an absolute value which is less than 1, and not if it is 1 or greater.
It is a geometric progression with common ratio 0.5
This is referred to as a geometric progression - as opposed to an arithmetic progression, where each new number is achieved via addition or subtraction.
The sequence 2, 3, 5, 8, 12 is neither arithmetic nor geometric. In an arithmetic sequence, the difference between consecutive terms is constant, while in a geometric sequence, the ratio between consecutive terms is constant. In this sequence, there is no constant difference or ratio between consecutive terms, so it does not fit the criteria for either type of sequence.
No.
No. It is a sequence for which the rule is a quadratic expression.
15. It's a Geometric Progression with a Common Ratio of 1/5 (or 0.2).