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Forum » How smart are you? This PSAT Math Question Stumped Almost Everyone who took it
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Thread: How smart are you? This PSAT Math Question Stumped Almost Everyone who took it

post 1672829943 12-14-2022, 10:18 AM
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Originally Posted By HokieBrah⏩
It stumped the testmakers too, who said it was 7. Apparently two faces are coplanar when you join the two shapes, so there's actually 5 planar sides.

https://mindyourdecisions.com/blog/2...sunday-puzzle/

fuk you OP
Yes. Calibrating with the difficulty of these exams means you guess what you think the complexity they'd ask is.

So, you'd get scored 'right' by answering what the testmakers said, anyway, because it's on their key.
post 1672830083 12-14-2022, 10:19 AM
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What age / level of education is PSAT anyway?
post 1672830253 12-14-2022, 10:22 AM
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Originally Posted By engj⏩
Im not doing any math just using multiple choice logic.

Instinct says 7 which means its wrong because apparently normies get it wrong.

If the faces were different sized it would add faces where the margins stuck out, but thats impossible because all sides are the same length.

If adjoining faces become a single plane you would lose faces, but it could only happen on one side because of the different base geometry. I think its 5
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post 1672830623 12-14-2022, 10:28 AM
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Originally Posted By MiscMathematician⏩
agree why do they teach how to cut 2x4s into thirds too. who would ever need to know what a third of a 12 foot 2x4 is

who cares what angles are too., ill never need to know what angle to have my roof at. ill just make it level and repair the roof every year

fukkin lol at knowing the grade of my property. water can flow into my basement whenever it wants
You know damn fukking well like 90% of the stuff you learn in school you never use or see again in life. Unless you happen to be someone who works in a field that does use advanced math or geometry. Which is a very small % of people.
post 1672831523 12-14-2022, 10:42 AM
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Normies didn't get it wrong, they just accepted an alternate solution. The angle of the faces are different so it should be 7

Nevermind im retarded
post 1672831913 12-14-2022, 10:50 AM
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Originally Posted By Guyfawkes1010⏩
You know damn fukking well like 90% of the stuff you learn in school you never use or see again in life. Unless you happen to be someone who works in a field that does use advanced math or geometry. Which is a very small % of people.
Tradies like you need to visualize if you can fit a toilet next to a sink bruh
post 1672832063 12-14-2022, 10:53 AM
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Originally Posted By Guyfawkes1010⏩
You know damn fukking well like 90% of the stuff you learn in school you never use or see again in life. Unless you happen to be someone who works in a field that does use advanced math or geometry. Which is a very small % of people.
Now that's what I call cope.

Good luck running a society with only engineers and mathematicians.
post 1672832593 12-14-2022, 11:00 AM
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Damn, that is a tricky one. Getting the two faces of the tetrahedron to meet and make two flat rhomba is fking me up.
Originally Posted By Rabbitjb⏩
What age / level of education is PSAT anyway?
15-16. It's more or less the same as the PSAT.
post 1672833153 12-14-2022, 11:14 AM
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Originally Posted By Dogkrack⏩
5 + 4 - 2
Originally Posted By MiscMathematician⏩
You are deleting a face from both by gluing them
I think these, but I can live with being wrong.
Originally Posted By HokieBrah⏩
It stumped the testmakers too, who said it was 7.Apparently two faces are coplanar when you join the two shapes, so there's actually 5 planar sides.

https://mindyourdecisions.com/blog/2...sunday-puzzle/

fuk you OP
Are we sure about that though? How does that work when one of the planes is a square? Don't they have to be attached as two triangles?
Originally Posted By andrepmeet⏩
wow had the correct answer at first 5, but that I must be wrong. tbh if they had a better illustration it would be easier. you have to redraw in in your head.
Ah, now I get it.

diamond + diamond + triangle + triangle + square = 5
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post 1672833893 12-14-2022, 11:29 AM
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Originally Posted By engj⏩
Im not doing any math just using multiple choice logic.

Instinct says 7 which means its wrong because apparently normies get it wrong.

If the faces were different sized it would add faces where the margins stuck out, but thats impossible because all sides are the same length.

If adjoining faces become a single plane you would lose faces, but it could only happen on one side because of the different base geometry. I think its 5
correct

the answer is 5 because it lsoes 2 extra sides, because they become coplanar
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post 1672834043 12-14-2022, 11:31 AM
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Originally Posted By Guyfawkes1010⏩
Bro I can never do these sort of problems because I never know what in the actual fukk they are saying. I cant read something like that and decipher what it is they are asking me to do if that makes any sense. It looks like word salad to me.
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post 1672834053 12-14-2022, 11:31 AM
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No you dont need to add up anything

you just need to understand that the square pyramid has 5 faces.... and that doesnt change when you add the smaller shape. it increases the area of some faces..... but no new ones are created. the faces of all from the 2nd one are redundant
post 1672834223 12-14-2022, 11:35 AM
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either 5 or 7, depending on how dumb this question is

do 2 faces combine to make one continuous face?
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post 1672834243 12-14-2022, 11:36 AM
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Originally Posted By sooby⏩
either 5 or 7, depending on how dumb this question is

do 2 faces combine to make one continuous face?
yes, they become coplanar, leaving only 5, not 7
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post 1672834373 12-14-2022, 11:39 AM
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Ah

https://mindyourdecisions.com/blog/2...sunday-puzzle/
See you tomorrow
post 1672834433 12-14-2022, 11:40 AM
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I got an 800 in math on the PSAT and SAT so I am not answering another math question for the rest of my life.

This doesn't seem like a PSAT question though.
post 1672834533 12-14-2022, 11:42 AM
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Seven

Get fuct
post 1672835083 12-14-2022, 11:53 AM
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8.

EDIT: Sounds like more geometry savvy miscers got to 5
post 1672835383 12-14-2022, 11:57 AM
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I got 7, what do i win?
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post 1672836223 12-14-2022, 12:13 PM
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Originally Posted By Retoaded⏩
I got an 800 in math on the PSAT and SAT so I am not answering another math question for the rest of my life.

This doesn't seem like a PSAT question though.
Strong answer.

I'd like to say the same. Get into real fields asap.
post 1672839333 12-14-2022, 01:09 PM
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Originally Posted By legbroke⏩
Damn, that is a tricky one. Getting the two faces of the tetrahedron to meet and make two flat rhomba is fking me up.




15-16. It's more or less the same as the PSAT.
The PSAT is the same as the PSAT? Gotcha
post 1672839963 12-14-2022, 01:21 PM
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Originally Posted By rabbitjb⏩
the psat is the same as the psat? Gotcha
....

The PSAT is more or less the same as the SAT*
post 1672841813 12-14-2022, 01:49 PM
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i legit said 5 but not sure if i used the logic itt lol
post 1672842263 12-14-2022, 01:57 PM
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Cool, if I was taking the psat, I would have got the answer right, since 7 and 5 were correct at the time, and I said 7.
post 1672843143 12-14-2022, 02:14 PM
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Originally Posted By propreffered7⏩
i legit said 5 but not sure if i used the logic itt lol
being lucky is just as good brah
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post 1672843213 12-14-2022, 02:16 PM
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i got stumped on the third word

never heard of a tetrahedron whatever the fuk
post 1672843753 12-14-2022, 02:26 PM
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Originally Posted By outfoxxed⏩
Normies didn't get it wrong, they just accepted an alternate solution. The angle of the faces are different so it should be 7

Nevermind im retarded
Spoiler!
7 or 5 are correct according to the video posted earlier
post 1672843903 12-14-2022, 02:30 PM
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It’s seven
I loe e.
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