What is the 20th term of the series 2 x 4 + 4 x 6 + 6 x 8 ..... ?

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2 x 4 + 4 x 6 + 6 x 8 ..... എന്ന പരമ്പരയുടെ 20-ാം പദം എത്ര ?

A1680

B1640

C1600

D1620

Answer:

A. 1680

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