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Mathematics: Post your doubts here!

I have a question please. A geometric series has first term a and common ratio r,where absolute value of r<1.Sum of infinity of this series is 8.The sum of infinity of this series obtained by adding all the odd-numbered terms(i.e. 1st term+3rd term+5th term+....) is 6.Find the value of r
- auk
- Post #9,958
- Oct 25, 2013
- Forum: A-Levels

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