Writing Explicit Formulas for Sequences

Interactive Video
•
Mathematics
•
1st - 6th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might someone prefer using an explicit formula over listing all terms in a sequence?
It is only useful for small sequences.
It is more time-consuming.
It allows finding specific terms directly.
It requires less understanding of the sequence.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of recursive formulas?
They do not require previous terms.
They rely on the previous term to find the next one.
They are only used for geometric sequences.
They use the first term only.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an arithmetic sequence, how is the explicit formula structured?
It multiplies the first term by a constant.
It adds a constant to the first term.
It adds a constant multiplied by one less than the term number to the first term.
It divides the first term by the term number.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the common difference in the arithmetic sequence 7, 17, 27, 37?
20
10
7
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the explicit formula for a geometric sequence structured?
It divides the first term by the term number.
It subtracts a constant from the first term.
It adds a constant to the first term.
It multiplies the first term by a constant raised to the power of the term number minus one.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the geometric sequence 3, 6, 12, 24, what is the common ratio?
4
6
2
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are explicit formulas particularly useful for finding terms like the 50th in a sequence?
They require listing all previous terms.
They simplify the sequence to a single term.
They are only useful for the first few terms.
They allow direct calculation without listing all terms.
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