5,000 Credits for an answer to this

[leonid]

~-(4*(4+4/4)) = ~-20 = 19

~ is bitwise complement operator.


Also, 4.4*4.4 = 19.36 = about 19.

[Yee Yee-kun]

1+1-1x1=1

[Blue Bird]

I could go code a program that...

4 + 4 + 4 + 4 = ?
4 - 4 + 4 + 4 = ?
4 * 4 + 4 + 4 = ?
4 / 4 + 4 + 4 = ?
4 + 4 - 4 + 4 = ?
...
4 / 4 / 4 / 4 = ?

Then sort out all the answers in numerical order, and see what we get. =P

I'll do it for 5k. *cough*


EDIT:

Originally Posted by emerald000

Well, I ran a little script trying every possible combination of operators (and brackets while at it) and there was no 19 in there. So it is impossible in normal mathematical logic.

Damn I really... I should read the entire thread next time, and not just stop in the middle of the 2nd. =.= My bad.

[Redorigami]

I still think he said 4x4 was 20 somewhere when he did it.
I've seen people make that mistake before and it's the only way to do it with his suggested order of increasing the first one and decreasing the second two.

[rzr]

If emerald proves it's impossible then the credits go to the first person who said it's impossible. I feel bad though. I swear it said 19. Maybe it really was 17. Thanks, guys.