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1 + (1 + 2)/1! + (1 + 2 + 3)/2! + (1 + 2 + 3 + 4)/3! + .... ∞ =

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in Binomial theorem by (46.7k points)

1 + (1 + 2)/1! + (1 + 2 + 3)/2! + (1 + 2 + 3 + 4)/3! + .... ∞ =

(A)  0

(B)  1 

(C)  7e/2

(D)  2e

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1 Answer

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Correct option  (C)  7e/2

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