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anonymous

  • one year ago

Please Help! Find the following sum: 1+2+4+8+...+2^k-1

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  1. geerky42
    • one year ago
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    What do you know so far?

  2. geerky42
    • one year ago
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    kind of hard to help you without knowing what you learned recently

  3. anonymous
    • one year ago
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    I learned about The and A Fibonacci sequence

  4. shamim
    • one year ago
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    Is it a geometric series?

  5. shamim
    • one year ago
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    Use Sum=a(1-r^n)/(1-r)

  6. shamim
    • one year ago
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    a=first term of ur given series r=comon ratio n= number of term

  7. shamim
    • one year ago
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    Sum=?

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