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Author Topic: Road Sign Math  (Read 23413 times)

xonhulu

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Re: Road Sign Math
« Reply #25 on: December 23, 2009, 07:33:26 PM »

211 + (13/13) + (99/99) - 2 + 11 - 8 = 214

not quite 0 = 0 but still a kinda trivial solution involving the 13/13 and 99/99.  nowhere near as impressive as that WW2 era OR-2/US-101 photo!

Thanks for the props on that; it took me quite awhile to figure that one out.


Anyway, here's another which is a little more difficult.  I assume these two signs function effectively as one assembly...

« Last Edit: March 21, 2012, 11:07:41 PM by xonhulu »
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agentsteel53

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Re: Road Sign Math
« Reply #26 on: December 23, 2009, 07:36:42 PM »

I assume these two signs function effectively as one assembly...

I think that's reasonable, not the extremely anal rules on the RSM site which apparently allowed a submission to hinge on a single structural support bar.  Lame.

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ctsignguy

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Re: Road Sign Math
« Reply #27 on: December 23, 2009, 08:54:50 PM »

@_@  *my head hurts looking at all this....havent done serious math outside my tax returns in DECADES!   

THUD!!! X_x!!!
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xonhulu

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Re: Road Sign Math
« Reply #28 on: December 23, 2009, 09:22:12 PM »

@_@  *my head hurts looking at all this....havent done serious math outside my tax returns in DECADES!   

THUD!!! X_x!!!

I know.  This is totally unfair: I teach math, so those mental muscles have stayed strong.
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Scott5114

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Re: Road Sign Math
« Reply #29 on: December 24, 2009, 05:03:18 AM »

I never had these skills in the first place :\
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xonhulu

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Re: Road Sign Math
« Reply #30 on: December 24, 2009, 10:13:51 PM »

No takers?  It isn't that horrifically hard...
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Duke87

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Re: Road Sign Math
« Reply #31 on: December 26, 2009, 01:18:45 AM »

sqrt(197-97)=(26-22)+(68-62)

Not complicated when you look at it. The fact that 197-97 = 100 and all the numbers on top are even is a glaring nudge in the right direction.


This one should be easier:

That's 1, 7, 87, and 95. Go!


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SSOWorld

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Re: Road Sign Math
« Reply #32 on: December 26, 2009, 01:58:33 AM »

(87+7) = (95-1)



One of the numbers does not get used - and that number is not a route number
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xonhulu

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Re: Road Sign Math
« Reply #33 on: December 26, 2009, 06:32:48 PM »

You can use them all:  29 + 81 = 66 + 65 + 1 - (10 + 12).  Those are the only numbers on the main assembly.

Here's a really hard one also involving US 10 and 12:



O.k., I'm joking.  I'm still looking for a good new photo.
« Last Edit: March 21, 2012, 11:09:59 PM by xonhulu »
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xonhulu

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Re: Road Sign Math
« Reply #34 on: December 26, 2009, 07:01:24 PM »

All right, here's another.  Try to find a solution where you aren't just balancing the identical numbers, there's a more clever equation.

« Last Edit: March 21, 2012, 11:11:02 PM by xonhulu »
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roadfro

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Re: Road Sign Math
« Reply #35 on: December 27, 2009, 04:33:47 AM »

My first go at one of these...

120/20 - (16-14) = 120/(16+14)


Unfortunately, I don't have access to any road photos right now as I'm away from my home computer.  I invite anyone to post a new photo in my stead.
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xonhulu

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Re: Road Sign Math
« Reply #36 on: December 27, 2009, 12:34:43 PM »

Good answer, and thanks for sticking with my rules for it!

I'll look for another to post, but it takes awhile, as I have to make sure there is an answer first.
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hbelkins

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Re: Road Sign Math
« Reply #37 on: December 27, 2009, 03:57:17 PM »

Here's another relatively simple one from I-90 in the Keystone State:


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xonhulu

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Re: Road Sign Math
« Reply #38 on: December 27, 2009, 04:42:39 PM »

I'd solve it, but I can't do math in Clearview. :confused:

Here's another tough one:

« Last Edit: March 21, 2012, 11:13:40 PM by xonhulu »
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njroadhorse

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Re: Road Sign Math
« Reply #39 on: December 27, 2009, 05:55:07 PM »

All Clearview jokes aside, 2 x 9 = 18

Try this out:
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xonhulu

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Re: Road Sign Math
« Reply #40 on: December 27, 2009, 06:30:23 PM »

No answer yet.  We are only using the four numbers (9, 57, 301, 501) on the arm, right?  I can solve it using the background shields and speed limit as well, but using any numbers in the background wouldn't be following the rules.

I've got a good one to follow this photo ready to go, but I want to solve this one first.
« Last Edit: December 27, 2009, 09:57:15 PM by xonhulu »
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njroadhorse

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Re: Road Sign Math
« Reply #41 on: December 28, 2009, 12:19:51 PM »

No answer yet.  We are only using the four numbers (9, 57, 301, 501) on the arm, right?
Yeah, just the numbers on the arm.
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xonhulu

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Re: Road Sign Math
« Reply #42 on: December 28, 2009, 08:25:03 PM »

You'll have to show me your solution, NJRoadhorse; I'm stumped!

Here's that photo I was promising.  The WA 12 is an error; it should be US 12.

« Last Edit: March 21, 2012, 11:15:30 PM by xonhulu »
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Duke87

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Re: Road Sign Math
« Reply #43 on: December 28, 2009, 11:15:43 PM »

Easy enough. 25+5/5+12-14=44-20

The mast arm one, however, is driving me crazy.
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xonhulu

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Re: Road Sign Math
« Reply #44 on: December 28, 2009, 11:22:50 PM »

Good job.  I'm still stumped on the mast arm problem, too.

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WNYroadgeek

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Re: Road Sign Math
« Reply #45 on: January 27, 2010, 08:20:25 PM »



15 + 17 = 86 - 54
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xonhulu

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Re: Road Sign Math
« Reply #46 on: January 27, 2010, 10:20:17 PM »

Glad this thread isn't dead.  Here's one for someone to crack:

« Last Edit: March 21, 2012, 11:17:48 PM by xonhulu »
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topay

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Re: Road Sign Math
« Reply #47 on: January 28, 2010, 09:42:19 AM »

Glad this thread isn't dead.  Here's one for someone to crack:



Cool game...here's one solution:
sqrt[37+sqrt(25)-26] = 52/26+2

I'm still getting pictures set up for future use, so someone else can go ahead and post up a new one if they wish.
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Android

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Re: Road Sign Math
« Reply #48 on: January 28, 2010, 03:29:01 PM »

So you need to have a number present in the previous photo then?  OK, how about this one? 
(Sorry for the blurry night photo)



(26-1)/((25 + 20)-1000) = 187-186

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yakra

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Re: Road Sign Math
« Reply #49 on: January 28, 2010, 07:32:38 PM »

Here's a wicked simple one:
« Last Edit: January 28, 2010, 09:20:53 PM by yakra »
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