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The sum of first n terms of the given series 12+2.22+32+2.42+52+2.62+.........isn(n+1)22, When n is even. When n is odd, the sum will be |
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Answer» The sum of first n terms of the given series 12+2.22+32+2.42+52+2.62+.........isn(n+1)22, When n is even. When n is odd, the sum will be |
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