Math Problem Statement
Solution
Let's analyze the sequences shown in the image one by one:
-
First sequence: 66, 44, 24, 6, ...
- The pattern is a decreasing sequence.
- Differences between terms:
- 66 - 44 = 22
- 44 - 24 = 20
- 24 - 6 = 18
- The differences decrease by 2, so the next difference should be 16.
- 6 - 16 = -10.
- Next number: -10.
-
Second sequence: 144, 12, 120, 10, ...
- Alternating pattern between a high and low number:
- 144 → 120 (decreased by 24)
- 12 → 10 (decreased by 2)
- The alternating pattern suggests:
- The next number after 120 would decrease by 24: 120 - 24 = 96.
- Next number: 96.
- Alternating pattern between a high and low number:
-
Third sequence: 22, 29, 43, 64, ...
- Differences between terms:
- 29 - 22 = 7
- 43 - 29 = 14
- 64 - 43 = 21
- The differences increase by 7 each time, so the next difference should be 28.
- 64 + 28 = 92.
- Next number: 92.
- Differences between terms:
-
Fourth sequence: 55, 74, 57, 72, 59, ...
- Alternating increases and decreases:
- 55 → 74 (increased by 19)
- 74 → 57 (decreased by 17)
- 57 → 72 (increased by 15)
- 72 → 59 (decreased by 13)
- The pattern shows that the amounts of increase and decrease alternate between odd numbers (19, 17, 15, 13, ...).
- The next change should be an increase by 11.
- 59 + 11 = 70.
- Next number: 70.
- Alternating increases and decreases:
Would you like further details or explanation on any of the sequences?
Here are five related questions you can explore:
- Can you identify another sequence that follows a similar pattern to one of these?
- How can you use differences between terms to predict the next number in a sequence?
- What are other examples of alternating sequences similar to the second or fourth ones?
- How would the patterns change if we modified the starting values of the sequences?
- Can you design your own sequence with a decreasing difference pattern?
Tip: When analyzing sequences, pay attention to whether the differences between terms form their own pattern (e.g., increasing by a constant amount or alternating).
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequences
Pattern Recognition
Formulas
n_th term of an arithmetic sequence: a_n = a_1 + (n-1)d
Pattern-based arithmetic
Theorems
Arithmetic difference
Alternating sequences
Suitable Grade Level
Grades 7-9
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