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While counting chairs in the lunch room, Krysta noticed that there were 33 chairs in the first row, 99 chairs in the second row, 2727 chairs in the third row, and 8181 chairs in the fourth row. What kind of sequence is this?\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither

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Q. While counting chairs in the lunch room, Krysta noticed that there were 33 chairs in the first row, 99 chairs in the second row, 2727 chairs in the third row, and 8181 chairs in the fourth row. What kind of sequence is this?\newlineChoices:\newline(A) arithmetic\newline(B) geometric\newline(C) both\newline(D) neither
  1. Identify Chairs in Rows: Krysta noticed a certain number of chairs in each row.\newlineFirst row: 33 chairs\newlineSecond row: 99 chairs\newlineThird row: 2727 chairs\newlineFourth row: 8181 chairs\newlineLet's list the number of chairs in the given order.\newlineSequence: 3,9,27,813, 9, 27, 81
  2. List Chair Numbers: 3,9,27,813, 9, 27, 81\newlineAre the differences between consecutive terms equal?\newline93=69 - 3 = 6\newline279=1827 - 9 = 18\newline8127=5481 - 27 = 54\newlineThe differences are not the same, so it is not an arithmetic sequence.
  3. Check for Arithmetic Sequence: 3,9,27,813, 9, 27, 81\newlineAre the consecutive ratios of the sequence equal?\newline93=3\frac{9}{3} = 3\newline279=3\frac{27}{9} = 3\newline8127=3\frac{81}{27} = 3\newlineThe ratio between each consecutive term is the same, which is 33.
  4. Check for Geometric Sequence: The sequence has:\newlineno common difference.\newlinea common ratio of 33.\newlineWhat type of sequence is 3,9,27,813, 9, 27, 81?\newlineSince the sequence has a common ratio, it is a geometric sequence.

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