Can you find positive integers a,b,c where (a!)(b!)=c! ?

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Current Events » Can you find positive integers a,b,c where (a!)(b!)=c! ?
That's the easy part. The real question is to prove there are infinite a,b,c pairs satisfying the equation when a<b<c . Still not that hard.
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Current Events » Can you find positive integers a,b,c where (a!)(b!)=c! ?