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6!×7!10!= ? \Large \frac {6! \times 7!}{{10}!} = \ ? 10!6!×7!= ?
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0!+0!+0!+0!0!+0!= ? \Large \frac{0!+0!+0!+0!}{0!+0!}= \ ? 0!+0!0!+0!+0!+0!= ?
(2015!+2016!2015!×2016!)×2016!= ?\large \left( \frac { 2015!+2016! }{ 2015!\times 2016! } \right) \times 2016! = \ ? (2015!×2016!2015!+2016!)×2016!= ?
x!=(7!)!7!, x= ?\Large x! = \frac { (7!)!}{7!}, \ \ \ \ \ \ \ x = \ ? x!=7!(7!)!, x= ?
Evaluate
(10!+9!)(8!+7!)(6!+5!)(4!+3!)(2!+1!)(10!−9!)(8!−7!)(6!−5!)(4!−3!)(2!−1!).\frac{(10!+9!)(8!+7!)(6!+5!)(4!+3!)(2!+1!)}{(10!-9!)(8!-7!)(6!-5!)(4!-3!)(2!-1!)} . (10!−9!)(8!−7!)(6!−5!)(4!−3!)(2!−1!)(10!+9!)(8!+7!)(6!+5!)(4!+3!)(2!+1!).
Hint: You don't need to multiply out all the factorials!
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