What-s-the-value-for-7-

Question Number 196205 by Mastermind last updated on 19/Aug/23

{What}^{'} s the value for! 7 ?

Answered by AST last updated on 19/Aug/23

! 7 = 7! (1 - \frac{1}{1!} + \frac{1}{2!} - \frac{1}{3!} + \frac{1}{4!} - \frac{1}{5!} + \frac{1}{6!} - \frac{1}{7!}) = 1854

Commented by AST last updated on 19/Aug/23

G e n e r a l l y,! n = n! \underset{k = 0}{\sum^{n}} \frac{{(- 1)}^{k}}{k!}

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