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What kind of sequence is this?\newline12,48,192,768,12, 48, 192, 768, \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?\newline12,48,192,768,12, 48, 192, 768, \dots\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither
  1. Check Differences: Let's first check if the sequence is arithmetic by finding the differences between consecutive terms.\newlineGiven sequence: 12,48,192,768,12, 48, 192, 768, \dots\newlineDifference between the first and second term: 4812=3648 - 12 = 36\newlineDifference between the second and third term: 19248=144192 - 48 = 144\newlineDifference between the third and fourth term: 768192=576768 - 192 = 576\newlineAre these differences equal?\newline3614457636 \neq 144 \neq 576
  2. Check Ratios: Since the differences are not equal, the sequence is not arithmetic. Now, let's check if the sequence is geometric by finding the ratios between consecutive terms.\newlineGiven sequence: 12,48,192,768,12, 48, 192, 768, \ldots\newlineRatio of the second to the first term: 4812=4\frac{48}{12} = 4\newlineRatio of the third to the second term: 19248=4\frac{192}{48} = 4\newlineRatio of the fourth to the third term: 768192=4\frac{768}{192} = 4\newlineAre these ratios equal?\newlineYes, all ratios are equal to 44.
  3. Identify Sequence Type: Since the sequence has a common ratio and not a common difference, it is a geometric sequence.

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