Math Problem Statement
Find the next two number in the number sequence 7,20,47,94,167
Solution
Let's analyze the sequence: 7, 20, 47, 94, 167.
First, let's determine how the sequence progresses by looking at the differences between consecutive terms:
The differences between consecutive terms are: 13, 27, 47, and 73.
Now, let's look at the differences between these differences:
The second-level differences are increasing by 6 each time: 14, 20, 26.
So, if we continue this pattern, the next second-level difference should be:
Now, let's find the next first-level difference:
Adding this to the last term in the sequence gives us the next term:
Continuing the pattern, the next second-level difference should be:
Adding this to the first-level difference:
Adding this to the last term:
So, the next two numbers in the sequence are:
272, 415
Would you like more details or have any further questions?
Here are some related questions:
- What is a second-level difference in sequences?
- How can second-level differences help in identifying the pattern of a sequence?
- Can you determine a formula for this sequence based on the differences?
- What if the second-level differences were constant? What type of sequence would that indicate?
- How would you approach finding the 10th term in this sequence?
- Can this sequence be classified as arithmetic or geometric? Why or why not?
- What role do higher-level differences (like third-level) play in sequences?
- How do you recognize a polynomial sequence from its differences?
Tip: Analyzing the differences between terms is a powerful method to identify and extend number sequences.
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Math Problem Analysis
Mathematical Concepts
Number Sequences
Patterns
Second-level Differences
Formulas
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Theorems
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Suitable Grade Level
Advanced High School