5,000 Credits for an answer to this

[foilman8805]

Re: 5,000 Credits for an answer to this

wrecked

[foilman8805]

Re: 5,000 Credits for an answer to this

Also, the only plausible explanation I can give for getting an answer of 19 is an order of operations error that calculators can be prone to if the user neglects to use parentheses (or uses them incorrectly).

[Ground_Breaker]

Re: 5,000 Credits for an answer to this

I'm pretty sure it's impossible with x=4.

The only way you can get an odd number is with what NinjaKIWI posted, which requires you to divide 4/4 to get 1, and that's not going to leave you with enough to reach 19. Two even numbers, when added, subtracted, multiplied, or divided (except for x/x) will always equal another even number, so you made an error somewhere.

[rzr]

Re: 5,000 Credits for an answer to this

What error, Erich?

[foilman8805]

Re: 5,000 Credits for an answer to this

Order of operations. I just said it was merely a possibility. It may not effect it at all. I really don't think it can be done.

[AC1speakerbox]

Re: 5,000 Credits for an answer to this

This problem > Me
(serously though, it can't be done)

[emerald000]

Re: 5,000 Credits for an answer to this

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.

[AC1speakerbox]

Re: 5,000 Credits for an answer to this

haha. yeahhh... you can't get an odd number from all 4's. it's impossible

I sense stupid

[devonin]

Re: 5,000 Credits for an answer to this

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.

So rzr...

[bluguerrilla]

Re: 5,000 Credits for an answer to this

Wrecked, give the man (emerald) 5k credits, me as well because I called it first and someone else because you punched the numbers into the calculator wrong and deserve to be out 15k credits.

[leonid]

Re: 5,000 Credits for an answer to this

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

~ is bitwise complement operator.


Also, 4.4*4.4 = 19.36 = about 19.

[Yee Yee-kun]

Re: 5,000 Credits for an answer to this

1+1-1x1=1

[Blue Bird]

Re: 5,000 Credits for an answer to this

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:

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]

Re: 5,000 Credits for an answer to this

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]

Re: 5,000 Credits for an answer to this

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.