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What kind of sequence is this? 2,10,50,250,2, 10, 50, 250, \ldots Choices:Choices:\newline[A]arithmetic\text{[A]arithmetic}\newline[B]geometric\text{[B]geometric}\newline[C]both\text{[C]both}\newline[D]neither\text{[D]neither}

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Q. What kind of sequence is this? 2,10,50,250,2, 10, 50, 250, \ldots Choices:Choices:\newline[A]arithmetic\text{[A]arithmetic}\newline[B]geometric\text{[B]geometric}\newline[C]both\text{[C]both}\newline[D]neither\text{[D]neither}
  1. Sequence Type Determination: To determine the type of sequence, we need to examine the relationship between consecutive terms.\newlineLet's check if it's an arithmetic sequence by finding the difference between consecutive terms.\newlineDifference between second and first term: 102=810 - 2 = 8\newlineDifference between third and second term: 5010=4050 - 10 = 40\newlineDifference between fourth and third term: 25050=200250 - 50 = 200
  2. Arithmetic Sequence Analysis: Since the differences between consecutive terms are not constant 8,40,2008, 40, 200, the sequence is not arithmetic.
  3. Geometric Sequence Analysis: Now let's check if it's a geometric sequence by finding the ratio between consecutive terms.\newlineRatio of second to first term: 102=5\frac{10}{2} = 5\newlineRatio of third to second term: 5010=5\frac{50}{10} = 5\newlineRatio of fourth to third term: 25050=5\frac{250}{50} = 5
  4. Geometric Sequence Analysis: Now let's check if it's a geometric sequence by finding the ratio between consecutive terms.\newlineRatio of second to first term: 102=5\frac{10}{2} = 5\newlineRatio of third to second term: 5010=5\frac{50}{10} = 5\newlineRatio of fourth to third term: 25050=5\frac{250}{50} = 5Since the ratio between consecutive terms is constant (55), the sequence is a geometric sequence.

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