Missing number calculator geometric series

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What number is missing from the sequence?

Things to remember in geometric series progression of numbers and how to use the formula.

Practice how to write mathematical expression or equation

Let variable letter "r" - represent the ratio between second term and first term.

Let variable letter "n2" - represent the second term in series of number.

Let variable letter "n1" - represent the first term in series of number.

Let variable letter "n" - represent the total number count up to the last missing number.

If the quotient or ratio between the following number (n2) and the previous number (n1) is the same then you have a geometric progression. Remember first term n1 is always variable letter "a" when you read standard textbook formula for geometric progression

Let variable letter "L" - represent the last term in geometric series of number.

Let variable letter "s" - represent the sum of geometric series progression up to the last number.

Procedure on how to find the last term "L" in geometric series progression by using the discovered formula or recipe.

Step 1. Enter the given numerical value of position "n2", for example n2 = 3

Step 2. Enter the given numerical value of position "n1", for example n1 = 15

automation was used to save time to compute the ratio, "r" = 0.2

automation was used to save time to enter the value of n1 or a, "a" = 15

Step 3. Count the total number up to the last missing term, for example total number, n = 5

automation was used to save time to compute the missing last term, "L" = 0.024

automation was used to save time to compute the total sum of geometric series up to the last term, "s" = 18.744

a
r
n
/
n2
n1
r


Round off the answer to the closes specific available option for selection. For example 3.9998 round off to 4

Practice



99 - Missing Number Arithmetic Series




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