श्रेणी ∑a=0∞n2-n+1n! का योग है:

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Mathematics » Algebra

श्रेणी $\sum_{a = 0}^{\infty} \frac{n^{2} - n + 1}{n!}$ का योग है:

A

e

B

3⁄2 e

C

2e

D

3e

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