I cry FOUL!

Regarding the solution to last week's MGRE Math Beast Challenge problem: I see a serious mistake that alters the nature of the answer. Here's a copy of MGRE's explanation for why the answer to last week's problem isn't D:



Notice anything?

The answer explanation assumes that the numerator of the fraction in Quantity B is a factorial!

Congratulations to whoever won last week's contest; they're not to blame for MGRE's mistake. But readers of this blog will recall that I was explicit in noticing that Quantity B's numerator was decidedly not a factorial, which made all the difference. And that's why I chose D.

So, yeah: I cry foul.


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