Which answer describes the type of sequence? 16, 12, 32, 92, ... neither arithmetic nor geometric geometric arithmetic
1 answer:
Answer:
neither arithmetic nor geometric
Step-by-step explanation:
16, 12, 32, 92, ...
For arithmetic , there should be a common difference
16, 12, 32, 92, ...
Lets find the difference of two consecutive terms
12-16 = -4
32 - 12 = 20
92 - 32 = 60
Common difference is not same so it is not arithmetic
For Geometric , there should be a common ratio
16, 12, 32, 92, ...
Lets find the ratio of two consecutive terms
Common ratio is not same , so it is not Geometric
So answer is neither arithmetic nor geometric
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Solution:
The following information about the chain email can be Written as follows:
1 Person Email →→6 Persons (E-mail) →6² Persons (E-mail)→6³ Persons (E-mail)+.........few Days
As you can see the number of email sent starting from person 1 to 6 persons to 36 persons to 216 persons, forms a Geometric pattern.
So, Sum of the Series = 1 + 6 + 36 + 216 + 1296 +......+ for n days
=
Formula for n terms of a geometric series
For, Common ratio (r)≥1
Sum of above geometric series up to n terms