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anonymous

  • one year ago

What is the sum of this geometric series? 16+32+...+256 -612 B-848 C-992 D-496

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  1. anonymous
    • one year ago
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    I will give medal

  2. welshfella
    • one year ago
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    the easiest way to do this is to write out all the terms the common ratio = 32/16 = 2 so the series is 16+32+64+128+256

  3. welshfella
    • one year ago
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    every term is obtained form the one before by multiplying by 2

  4. welshfella
    • one year ago
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    so grab your calculator and add these 5 numbers to get your answer

  5. welshfella
    • one year ago
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    Hint: the answer is a number just below 500

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