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Question Number 80501 by naka3546 last updated on 03/Feb/20

\frac{5}{7} = \frac{a_{2}}{2!} + \frac{a_{3}}{3!} + \frac{a_{4}}{4!} + \frac{a_{5}}{5!} + \frac{a_{6}}{6!} + \frac{a_{7}}{7!}

0 ⩽ a_{i} < i, a_{i} \in N

F i n d p o s s i b l e v a l u e o f a_{2} + a_{3} + a_{4} + a_{5} + a_{6} + a_{7} .