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What kind of sequence is this?\newline86,104,122,140,86, 104, 122, 140, \dots\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither

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Q. What kind of sequence is this?\newline86,104,122,140,86, 104, 122, 140, \dots\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither
  1. Verify Consecutive Differences: Let's verify if the differences between consecutive terms are uniform. Given sequence: 86,104,122,140,86, 104, 122, 140, \ldots\newlineAre the consecutive differences in the sequence equal? \newline10486=18104 - 86 = 18, 122104=18122 - 104 = 18, 140122=18140 - 122 = 18.\newlineThe consecutive differences in the sequence are equal.
  2. Identify Arithmetic Sequence: Since the consecutive differences are equal, this indicates that the sequence is an arithmetic sequence. An arithmetic sequence is defined by having a common difference between consecutive terms.
  3. Check for Geometric Sequence: Now, let's check if the sequence could also be geometric by finding the ratios between consecutive terms. 10486\frac{104}{86} does not equal 122104\frac{122}{104}, and neither equals 140122\frac{140}{122}. Therefore, the sequence does not have a common ratio.
  4. Final Conclusion: Since the sequence has a common difference but not a common ratio, it is an arithmetic sequence and not a geometric sequence.

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