Consecutive Triangle

Number Theory Level 1

18!+19!=x10!\dfrac{1}{{8!}} + \dfrac{1}{{9!}} = \dfrac{x}{{10!}}

Find the value of xx satisfying the equation above.


Notation: !! denotes the factorial notation. For example, 8!=1×2×3×⋯×88! = 1\times2\times3\times\cdots\times8 .

Yash Jain by Yash Jain
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