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What kind of sequence is this?\newline124,140,156,172,124, 140, 156, 172, \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?\newline124,140,156,172,124, 140, 156, 172, \dots\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither
  1. Verify Differences Uniform: Let's verify if the differences between consecutive terms are uniform. Given sequence: 124,140,156,172,124, 140, 156, 172, \ldots\newlineAre the consecutive differences in the sequence equal? \newline140124=16140 - 124 = 16, 156140=16156 - 140 = 16, 172156=16172 - 156 = 16.\newlineThe consecutive differences in the sequence are equal.
  2. Consecutive Differences Equal: 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. Identify Arithmetic Sequence: Now, let's check if the sequence could also be geometric by finding the ratios between consecutive terms. 1401241.129\frac{140}{124} \approx 1.129, 1561401.114\frac{156}{140} \approx 1.114, 1721561.103\frac{172}{156} \approx 1.103. The ratios between consecutive terms are not equal.
  4. Check for Geometric Sequence: Since the sequence does not have a common ratio, it is not a geometric sequence. A geometric sequence is defined by having a common ratio between consecutive terms.

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