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" 3.In an an a "A=n=n(4n+1)" ,find the "...

" 3.In an an a "A=n=n(4n+1)" ,find the "6

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In an AP, If S_(n)=n(4n+1), then find the AP.

In an AP, If S_(n)=n(4n+1), then find the AP.

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If the numbers (2n-1), (3n+2) and (6n-1) are in AP, find n and hence find these numbers.

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