Learning to find the partial sum of a geometric series

Interactive Video
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Mathematics, Business
•
11th Grade - University
•
Hard
Wayground Content
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for the partial sum of a geometric series?
a_n = a_1 * (1 + r^n) / (1 - r)
a_n = a_1 * (1 - r^n) / (1 - r)
a_n = a_1 * (1 + r^n) / (1 + r)
a_n = a_1 * (1 - r^n) / (1 + r)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Under what condition is the partial sum formula valid?
When the series starts at 2
When the series starts at 1
When the series starts at 0
When the series starts at any number
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the series be adjusted to start at 1?
By multiplying each term by 2
By rewriting the series without changing values
By subtracting 1 from each term
By adding 1 to each term
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in rewriting the series to start at 1?
Add a constant
Change the formula
Adjust the rule
Multiply by a factor
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mistake did the teacher correct during the evaluation?
The power to which the ratio is raised
The number of terms in the series
The value of the first term
The denominator of the formula
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in calculating the partial sum?
Evaluating the first term
Applying the formula
Correcting the mistake
Calculating the final sum
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the number 21 in the series?
It is the number of terms
It is the common ratio
It is the first term
It is the last term
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