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Find the 20th term and the …

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Find the 20th term and the sum of 20 terms of the series:2×4+4×6+6×8+..
  • 2 answers

Rajesh Kumar 6 years, 6 months ago

General terms 2n(2n+2) put n=20 you get 40×42

Rajesh Kumar 6 years, 6 months ago

40×42
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