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/sci/ - Science & Math

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1948719 No.1948719 [Reply] [Original]

How many 4 sided shapes, /sci/?

inb4 homework, this is obviously a quiz.

>> No.1948722

Six.

>> No.1948725

Four.

>> No.1948727

I got 20, no idea if that's right.

>> No.1948726

>>1948719
meh i got to 24 and got bored looking for any more.

10^1 < answer <10^2 is good enough for me

>> No.1948728

42

>> No.1948735

18?

>> No.1948745

10 if edges overlap but shapes can't cross or nest.

>> No.1948756

Seriously /sci/?
No one knows?

>> No.1948762

>>1948745
and "4" if you're looking for the minimum number of shapes where "shape" means "rectangle that can overlay another rectangle"

>> No.1948767

20

>> No.1948769

30

>> No.1948770

there's 20

>> No.1948790

13?

>> No.1948793
File: 33 KB, 308x321, ckgy4qdn.gif [View same] [iqdb] [saucenao] [google]
1948793

26?

>> No.1948797

25
my head hurts now.

>> No.1948805
File: 14 KB, 340x340, 12233462256.jpg [View same] [iqdb] [saucenao] [google]
1948805

>mfw /b/ doesn't know how to approach this

>>>/b/282225666

>> No.1948809

There's at least 27 of them.

>> No.1948816

How are you bustas counting more than ten?

>> No.1948832

There are 11.

>> No.1948833
File: 15 KB, 650x238, 43[1].jpg [View same] [iqdb] [saucenao] [google]
1948833

The correct answer is 26.
Here's another one.

>> No.1948836

>>1948816
fucking demonstrated, shithead
>>1948793
>ckgy4qdn.gif

>> No.1948842

>>1948793

overlapping is for fags.

>> No.1948875

answers 26 if you go through each section

>> No.1948931

>>1948833
76?

>> No.1948944
File: 61 KB, 646x288, jkmj3b9y.png [View same] [iqdb] [saucenao] [google]
1948944

>>1948931
method

>> No.1948991
File: 11 KB, 262x342, z19.jpg [View same] [iqdb] [saucenao] [google]
1948991

i get 28.
5! + 2X(3!) + 1 = 15 + 2X6 + 1 = 28

>> No.1949028
File: 51 KB, 600x392, rectangles.jpg [View same] [iqdb] [saucenao] [google]
1949028

sorry, my mistake, there is 27, i counted number 10 twice. i knew it should have been an odd number because there is a rectangle in the centre that doesn't overlap with anything else...

>> No.1949041

>>1949028
8 and 24 double counted you fuck.
the answer has been given already, even with an animated gif.

also, stop posting that ugly bitch

>> No.1949044

>>1949028
>>1949028

> i knew it should have been an odd number because there is a rectangle in the centre that doesn't overlap with anything else

Also, this is retarded

>> No.1949052

>>1949041
whoops, sorry. my bad.

...no need to be rude tho. :(

>> No.1949072

>>1949052
Rudeness is subjective. I don't care if I offended you.
I find it offensive that you undermine people that have already answered by bowling into the thread and spouting shit without reading their replies.

>> No.1949086
File: 12 KB, 306x301, z10.jpg [View same] [iqdb] [saucenao] [google]
1949086

>>1949072
i DID read their replies, other people got it wrong as well, and were even further out than i was, i don't see you slagging them off. also, i'm not 'spouting shit' i was trying to work out the correct answer,

(also, earlier, i put factorial, but i was doing it wrong, i meant triangle numbers, so [n(n+1)]/2 ...yeh)

>> No.1949091

>>1949086
whats the deal with the whore in the pic? I've seen it here the other day.

>> No.1949103
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1949103

>>1948991
i was nearly right, i forgot you need to - 1 for each overlapping rectangle, so its [5(5+1)]/2] + 2X[3(3+1)]/2] + 1 - 2
= 15 + 12 + 1 - 2 = 26

>> No.1949115
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1949115

>>1949041
>ugly bitch
>>1949091
>whore

... seriously, fuck you guys.

>> No.1949122

>>1949115
no, fuck you for posting ugly bitch whores.

fancy goin for a coffee?

>> No.1949128

>>1949091
She is a Youtube Atheist.
I like her. She posts some good vids on youtube.

>> No.1949132

>>1949128
I am a ZO.........s fan. I doubt it is realy her posting here though it would be awesome if it was her

>> No.1949137

well ok, but isnt /b/ the place for camwhores?

>> No.1949155

My word, you guys can't even COUNT? It's 26. I'm honestly surprised so few people got this. If your little brains are having trouble understanding how to do this, here's a failproof method:

1. Pick an outer edge piece, preferably one sticking out so it's easier.
2. Find all four sided shapes that contain this edge piece.
3. You can now erase this edge piece, so you don't accidentally use it again. If there are any pieces left "sticking out", which are now unusable, you can erase them too.
4. Repeat until you've counted all shapes.

OR, you can do it by seeing that it's (5+4)+(3+2)+(3+2)+(3+2)+1+1...

>> No.1949299

>>1949122
>fancy goin for a coffee?
are you that same guy from last night? when the thread 404'd or something?
...people on /sci/ must really love coffee...

>> No.1949436

Why do I get 28?

>> No.1949444
File: 17 KB, 398x345, z21.jpg [View same] [iqdb] [saucenao] [google]
1949444

>>1949436
i did the same thing, you have to remove 1 for each overlapping rectangle there is, or you count things twice. the ones i counted twice were 8 and 10 on this >>1949028
i counted them once verticly, and once horizontally, so you get the wrong answer. as some rude faggot alread ypointed out, on my diagram 8 and 24 are the same. so th real answer is 26.