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Aarondrob12 Aarondrob12
  • 02-02-2017
  • Mathematics
Answered

Express the series using sigma notation. 10 + 50 + 250 + 1250.

Verified Answer :

LammettHash
LammettHash LammettHash
  • 02-02-2017

Each next term is being multiplied by 5. Assuming there are only 4 terms to the sum, you have

\(10+50+250+1250=10\times5^0+10\times5^1+10\times5^2+10\times5^3=\displaystyle\sum_{i=0}^310\times5^i\)

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