Four fours update January 4, 2008

Posted by Peter Hornby in Uncategorized.

I may have neglected to mention that one of the permitted Four Fours techniques is the use of ‘.4’. So, you can burn two fours on $10 = 4/.4$ if you want. That’s not desperately interesting, since 10 is available other ways, but when you use it with the factorial, it can get you to places you can’t get to otherwise.

So, it turns out that

$1194 = (4^!-\sqrt{4})^2/.4 - 4^2\hspace{10 mm}(1210 - 16)$

Dammit, this is like pulling teeth. I’m now staring at 1195, which is staring back at me with a mean, uncompromising expression.

1. Patti - January 6, 2008

Hmm…

http://xkcd.com/356/

I think you’ve been sniped! ;-)

2. Peter Hornby - January 6, 2008

Humph. I fail to see the relevance.

My wife, on the other hand, fell off her chair laughing. When she recovered, she printed the cartoon, and it now occupies a prime spot on the fridge door.

By the way, I’m now stuck on 1325 and things are not looking good.