Hacker Lobe Exercising

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Hacker Lobe Exercising Anonymous 09/23/14 (Tue) 16:36:34 No.100

Can we get a thread where post puzzles/challenges/brainteasers that put you in the hacker mind set? I'll start off with one from a book, because I don't know of any more like it.

Use each of the numbers 1, 3, 4, and 6 exactly once with any
of the four basic math operations (addition, subtraction,
multiplication, and division) to total 24.

I implore you to not google the answer and actually try to solve it, I'll post the answer later if requested.

Anonymous 09/23/14 (Tue) 17:20:03 No.101

OP I think I have a case of the dumdums. I've tried a fuckton of combinations (obviously not 'the hacker mindset') but I can't see how you get to 24 without breaking the rules of math which would render the exercise meaningless.

Anonymous 09/23/14 (Tue) 17:28:50 No.102

>>101
it's entirely possible, I'll give you a hint think small.

anonymouse!6EYsIxhDtk 09/23/14 (Tue) 17:57:25 No.103

>>100
Look up challenge 24, they're pretty fun puzzles. I haven't got yours, though.

Anonymous 09/23/14 (Tue) 18:03:22 No.104

>>103
oh yeah I remember doing these in like middle school, they're too simple for me now.

I promise I'll give you all the answer in a few minutes, I just want to give a few people a chance. I'll do it in 10 minutes.

Anonymous 09/23/14 (Tue) 18:19:55 No.105

Ok guys, here's the answer to the puzzle in my post…ready?

24 = 6 / 1 - (3/4)

see 1 subtracted by 3/4 is 1/4 which divides 6 in to 24 parts!

Anonymous 09/23/14 (Tue) 18:21:41 No.106

>>105
Fuckkkk that's the approach I was using, except I didn't think of subtracting a fraction from a whole number.

Anonymous 09/23/14 (Tue) 18:27:29 No.107

>>105
The order of operations is wrong

Anonymous 09/23/14 (Tue) 18:31:25 No.109

>>107
>>106
at least you were doing something right, first time I couldn't even figure out what to do, so I went with exponents and didn't get very far. Wish I had more!

>>107
Do elaborate, where and how is the order of operations wrong.

Anonymous 09/23/14 (Tue) 18:51:11 No.110

>>109
Not him but 6/1-(3/4) would result in 21/4. It should be 6/(1-3/4).

Anonymous 09/23/14 (Tue) 18:54:29 No.111

>>110
>>110
ah! I see, I am not savvy on writing out equations with fractions on the computer. Thanks for clearing that up!

TheBadGoyim 09/24/14 (Wed) 00:55:05 No.115

3 / 4 = .75
1 - .75 = .25
6 / .25 = 24

GrumpyToast 09/25/14 (Thu) 14:46:43 No.157

24 / [4] = (6)
Then take that answer
(6) and add [6] to it, equaling (12)
The subtract [1] from [3] to equal (2)
Then multiply the answer (12) with the answer (2), to equal [24]..

GrumpyToast 09/25/14 (Thu) 14:53:32 No.158

>>157
[1] [3] [4] [6] [24] are specific variables in this case, but the answers (6) (12) and (2) are outcomes of functions using each variable once.
The 'result of' each function can be equal to the variable, but is not considered to be the original variable, only the result.

GrumpyToast 09/25/14 (Thu) 14:54:07 No.159

>>158
which is why [6] and (6) coexist.

Anonymous 09/25/14 (Thu) 17:31:02 No.164

>>159
Nice. I guess this is the "hacker mindset." I thought it was a bit of a stretch because 24 isn't included in the original allowed values, it is only the result so we don't know if it's [stuff] = 24 or just [stuff] == 24 (if that makes any sense). That's what 'thinking outside the box' is, I suppose.

Anonymous 09/25/14 (Thu) 19:19:23 No.167

File: 1411672763692.jpg (128.05 KB, 1280x960, 4:3, brushybot.jpg)

>>157
>>158
>>159
I am not trying to bust your balls or nothing, but the rules state you have to use 1,3,4,and 6 to equal 24. Therefore, you'd have to include all those numbers in the first equation somehow. Though I like your approach, it also says use the numbers exactly once, and, while I understand what you're saying and getting at, you're using them more than once.

>>164
he's definitely using that hacker mindset, but it's not all about the way you do it, it's also about what you're working with. The hacker mindset is that in which you use the rules, or boundaries, to do things which aren't expected within them.

i.e. using .5 in an item field to get the item for .5 the price.

Anonymous 09/25/14 (Thu) 21:45:30 No.169

>>105
you're fucking dumb
6 / 1 - (3/4) = 5.25

this is correct:
6/(1-(3/4)) = 24

lrn2math faggot

Anonymous 09/25/14 (Thu) 22:10:46 No.170

>>169

>>107
>>110
>>111

Anonymous 09/26/14 (Fri) 01:14:54 No.171

>>169
I didn't know we could use parenthesis, I thought we were literally resticted to +,-,x,and /

Anonymous 09/26/14 (Fri) 01:28:23 No.172

>>171
you are, but in computer notation writing a fraction requires the use of parenthesis, or special characters (which I do not know the codes of).

Anonymous 10/04/14 (Sat) 01:22:43 No.229

>>107
24=6/(1-(3/4))

Anonymous 10/09/14 (Thu) 21:58:58 No.266

>>172
>computer notation
>writing fractions requires special notation

Anonymous 03/03/15 (Tue) 08:46:43 No.571

topkek