Mathematics

Mathematics

Problem

The sum 1+1+32!+1+3+53!+1+3+5+74!+…1 + \frac{1+3}{2!} + \frac{1+3+5}{3!} + \frac{1+3+5+7}{4!} + \dots upto ∞\infty terms, is equal to (1) 6e6e (2) 4e4e (3) 3e3e (4) 2e2e

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