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Sum of first 75 terms

Arithmetic and Geometric progressions.
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Sum of first 75 terms

Postby Guest » Tue Aug 16, 2011 9:48 am

150*2 + 148*4 + 146*6 +....
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Re: Sum of first 75 terms

Postby Guest » Thu Aug 18, 2011 1:05 am

There is something tricky about this problem. It is not a normal progression.
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Re: Sum of first 75 terms

Postby Guest » Thu Aug 18, 2011 2:48 am

292600
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