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What kind of sequence is this?\newline148,135,122,109,148, 135, 122, 109, \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?\newline148,135,122,109,148, 135, 122, 109, \dots\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither
  1. Check Differences: To determine the type of sequence, we need to look at the pattern of the numbers. Let's check the difference between consecutive terms.\newlineDifference between the first and second term: 135148=13135 - 148 = -13\newlineDifference between the second and third term: 122135=13122 - 135 = -13\newlineDifference between the third and fourth term: 109122=13109 - 122 = -13
  2. Constant Difference: Since the difference between consecutive terms is constant, this indicates that the sequence is an arithmetic sequence.
  3. Arithmetic Sequence: An arithmetic sequence is defined by a constant difference between terms, which we have established as 13-13. This is not a geometric sequence because the ratio between terms is not constant.
  4. Correct Choice: Therefore, the correct choice is (A)(A) arithmetic.

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