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Education

6th -

8thgrade

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國中數學2下1-3

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10 questions

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  • 1. Multiple Choice
    1 minute
    1 pt

    下列何者不是等比數列?

    0 , 0 , 0 , 0 , 0

    1 , 0.1 , 0.01 , 0.001 , 0.0001

    Image

    如圖

    Image

    如圖

  • 2. Multiple Choice
    1 minute
    1 pt

    若一個等比數列的首項為2,公比為2,求此數列的第10項為何?

    256

    512

    1024

    2048

  • 3. Multiple Choice
    1 minute
    1 pt

    已知5 , x , 20成等比數列,則5與20的等比中項x=?

    -10

    10

    ±10

    ±15

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