2019 Raytheon MATHCOUNTS National Competition hosted by Wil Wheaton
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- Опубликовано: 13 июн 2019
- The 2019 Raytheon MATHCOUNTS National Competition was held May 11-13, 2019 Orlando, FL.
The Countdown Round features the 12 students who scored highest during the written portion of the competition. Problem are read aloud for the audience, but each competitor also has the problem displayed on a monitor in front of them. Students are allowed to buzz in at any point, they do not need to wait for the full question to be read.
Find out more about the MATHCOUNTS Competition Series at www.mathcounts.org/competition.
Luke, we will remember you.
where did he go
@@Boom12343he graduated, this competition is only for middle schoolers,
No Luke
No views
ruclips.net/video/-PevqEMqV2g/видео.html
He here
Andrew Cai ferda
i miss luke damn. he was a straight beast
what happened to luke
@@footyplays5409 Probably too old to compete in this competition now.
Ikr probably luke is in highschool since mathcounts is for middle school
😂😂😂
A request to editor, please show the question on screen as soon as he start dictating
Amen!!
Was about to say that myself
yaaa
Istg i am dying inside because i can't see the question
Yeahhhhhhhh
My mom signed me up for this and I searched it up so I know how it feels and now I'm worried
This is only nationals
Timestamps:
Suyash Pandit vs Eric Shen 2:16
Ethan Zhou vs Ram Goel 8:11
Sam Wang vs Karthik Vedula 14:40
Richard Wang vs Alan Kappler 19:07
Quartfinals 27:00
Suyash Pandit vs Jeff Lin 27:18
Ethan Zhou vs Jessica Wan 31:52
William Chen vs Sam Wang 36:23
Rich Wang vs Daniel Mai 42:25
Semifinals
Suyash Pandit vs Ethan Zhou 47:41
Sam Wang vs Daniel Mai 54:13
Finals
Suyash Pandit vs Daniel Mai 105:53
Beat me to it - thanks anyway!
spoiler alert
1:05:53
Nice to see indians
@@hashirshaikh510 what else do you expect other than asians. Its a fucking math competition
Where's my boy Luke for the threepeat?
42:45
- “Would you share a random fact with us?”
- “No.”
- “okay that’s fair”
😭😂
These kids solving problems before I even start thinking about the problem
These ppl don’t look like they’re in the grade they claim to be in .
they do though
The real trick is reading the question on Wil Wheaton's cards before it's posted
teach me your secrets plz... also tell me what your aops name is.
You are op
They have a monitor in front of them
I remember last year didn't you answer -2 for the really easy question when it was 6? It was 2x = 2 and x - y = -4, then what is x + y? x was 1 and y was 5, not x is 1 and y is -3. Can't believe it
Can almost guarantee everyone who watched this video has an AoPS account...
Nick S. What’s yours?
Hi I’m Ultroid999OCPN
uhh i don’t know if i wanna put that on RUclips. but believe me i have one, also I read your story lol it was rly good
Functionalmath
Hi i'm joanna418m
Excellent host
luke was disqualified due to his op big brain
PUERTO RICO IS PROUD OF YOU JESSICA!!!!!🇵🇷🇵🇷🇵🇷🇵🇷🇵🇷
Do not piggyback LOL No Latino can't compete with Asians LOL She is Asian. It just happens that she is from San Juan LOL
We need luke back
WTF, I CAME HERE FOR LUKE and read the comments :'(
Out of 10 questions I managed to answer roughly 4 and I need at least 2mins for each :D No idea how they manage it in 5 seconds
You got 4 damn you must be smart
Where is Luke? Our center attention?
Oh maybe he's on college right now
nah this is middleschool
6:07
*the general formula to find any plant's height given that (x) is the first plant's height and n is their position: x+3(n-1)
*in a group of 25 plants, the middle plant would be the 13th.
*middle plant: [x+3(13-1)]
*the one to its left: [x+3(12-1)]
add them up together:
[x+3(12)] + [x+3(11)] = (x+36) + (x+33) = (2x+69)
it was given that the sum of the 13th and 12th plant was equal to that of the 25th plant, which, by the general formula, would be:
[x+3(24)] = (x+72)
therefore,
(2x+69) = (x+72
)
2x-x = 72-69
x = 3
height of the middle plant:
x+3(12)
substitute x with (3):
(3)+36
=39
Thank you so much! I misread it and was doing the plant to the RIGHT of center and kept coming up with x as -3, and the answer 33, and was thinking "Is this an imaginary space garden where the first plant can have negative height?"
@@adamwarlock1 glad to help! :)
Not even that difficult. What is the height of the middle plant? Well 13 is the middle of 25 and 13x3=39cm
@@pussdesttoyer17 hi! but you wouldnt've known the height of the first plant - it was only stated that each following plant is 3cm taller than the plant before it. had the first plant been 1cm tall, then the answer would've been 37cm. you need the height of the first plant since no absolute value was given (we only know that each plant is 3cm taller than the one to its left). that's why i looked for (x) first, which is the height of the first plant.
you can't just do 13×3 ; it just so happened that the height of the first plant was 3cm as well which is why 13×3 gives the same answer.
Let n = height of middle plant:
n = (n+36) - (n-3) = 39
Without Luke it will never be the same
He would have been on 9th grade, I guess the cutoff date for this competition is the 8th grade?
Sadly I never made it past the regionals in MathCounts or Math Olympiad (of course, that was back in the age of dinosaurs... 1989-94). For this one, I was able to get a lot of the answers, or at least be on the right track for them (stupid math errors like not doubling the center term when squaring a polynomial). Of course, it took me minutes, not seconds. These kids are amazing!
Congratulations Daniel.....Suyash Pandit All the best for your future.
41:06
Sam: ...2?
MC: 2 is correct!
William: *Slams the pencil and almost like "bye, I'm done with this"
they always lose because they press the freakin buzzer before they're even ready it breaks my heart !
no, it's called strategy. you have 3 seconds to answer, and 3 seconds is VERY precious. however, the pressure results in loss of focus and they sometimes do make mistakes. overall, it's rather reliable.
Yay, finally
RUclips: wanna watch people speedrun maths?
Me: Yes
Who's the brave one that is going to time stamp and explain the answer to each question?
Awww karthik was so smiley
I like this
where's luke? he made it fun to watch...
Most times I don't see them solving, Do they do math in their heads or remembering cheat codes
They’ve done so many problems that they can do problems in their heads
40% of the problems are simply calculation (24:54)
35% of the problems are like the questions on your exams - slight variations of problems which they have formulas to (56:13)
15% of the problems can be solved almost directly with lemmas they've learned through experience (23:06)
10% of the problems are interesting and they have to play around (4:54)
mental math is also a key, the less you write down, the less time you take. however, it takes experience to know when you write and you do it mentally.
just about every problem in cdr, mathletes like these know exactly what to do when they read it. it's not to say they get the complete solution/answer right away, but they know where to start and what the solution looks like. it's only until AIME/olympiad where they won't know what to do and have to play around.
hope it helps!
the RUclips algorithm always reminding me that I have no brain and fancy lives like the other people
The second semifinals is the best part
6:19 surprisingly the only one I got right and then he says I don't think a person in this room understood what was going on with that question. lol
the middle one would be the 13th plant, if the first plant started at 3cm then the 13th would be 39 if increased by 3cm to the next plant.
Eric S. Definitely is mood
Why am I binging this
Luke we miss you please come back
i love eric!!!! wowwwww
wait did he win??
This audience's kinda tougher than the 2018's...
binge watch
where is luke?
allhamdulillah!!!!!!!
C'mon...Why do you always have to post it a month late
Vienna the country...
সব কটা question খুব ভালো👍
Candy question: 25:36 Isn't the correct answer "3 over 16"?
nope you have to divide it by the total candies eaten you divided by just the bright ones
@@ryangrayson1437 Oh! Thanks a lot.
Where's Luke?
11:52 "If Pauline ... " He sounds so akward
37:37 - 38:30
Since the point P, (x, y), is “on” the given circle, x^2 + y^2 = 4. (1)
The distance from P to the point (4, 0) is 3, so
sqrt((x-4)^2 + (y-0)^2)) = 3, or
(x-4)^2 + y^2 = 9. (2)
To solve (1) and (2) simultaneously:
(2) - (1)
-8x + 16 = 5, x = 11/8.
Sam’s answer is 8/5 and William’s 7/3. Both are incorrect.
1ClassicalMusicFan Now if you're that smart, why don't you go and show them how it's done?
Yep,noticed it.
Why u flexin
@@flippingphysics0160 because he probably did that longer than the amount of time required
I haven't been able to do math since like 9th grade but I'm really on the edge of my seat watching this
Alan was adorable
YESS
and Luke?
Can someone explain to me the Cersei question at 26:40
Where's Luke boy?
he's in ninth grade so he can't participate any more. He would have crushed all these competetors
luvitus bangton graduated
its because he died in MOP. They also need an alternate for IMO.
luvitus bangton He’s not in middle school anymore; MATHCOUNTS programs are only provided for middle schoolers from grades 6-8. But I bet he’s going to get a perfect score on the AMC 10/12 and AIME while eventually getting to MOP/USAMO/IMO
@@flippingphysics0160 he got 150 on 12B this year
Can I just say... Alan is adorable I would die for him
YES
he's a minor
@@darude_g892 they only called him adorable…
I was there! Got 68th /224
JEEEEEEZ RAM.G CHILL
ram.g,
what a g!!!!!!!
Pls guys teach me what the competition is?
how do they read question AND calculate the answer before the host even finishes the question?
@Sam Lee thanks
@@WaldoTheWombatwhat did the other guy say
@@deadlypyre i don't remember. Why do so many comments disappear though?
Where is answer??
How they answer so fast?
I HATE it when the competitors say the answers before the question is posted.
50:39. Really bro. 42/9 simplifies to 14/3 i s2gggg these people making such simple mistakes
Wow didnt even realize
It is technically correct lol
Jofx it did say in simplest terms, didn’t it?
@@datguiser No, it just said in common fraction
Under pressure, even top-level competitors can forget basic knowledge. My friend was 1 problem away from qualifying for Nationals (the last stage before this live round; they take the top 4 from each state) and one of the mistakes he made was rounding an otherwise correct answer to the nearest ten-thousandth instead of the nearest thousandth.
11/8
Daniel M. Winner
Where is Luke Robitaille??
raaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaam
:o
Im still looking for luke
Omg where is Luke and Andrew?
we all be missing Luke uh
...at 12:57 into video...presumably "Astro" is a cat or dog, and not a human, based on the given weights in pounds (problem & responses).
holy shit the kid that goes to miller middle school is my school HOLY SHIT
23:09 how do you do this?
similar triangles, x/3 = 5/x. pretty good formula to memorize honestly, it shows up a lot.
William pissed 😂
radius 1mm 500 20 cm diameter 30 cm
When you’re watching this and suddenly realize that you were a few places away...
Namesake! My name is also Krish
Onetwo Three, well you’re like the 3rd person I have seen named Krish so, nice!
luke would have smoked them all
at 11:23 how on earth did he get a four-digit number (ram g, I mean) I thought he got some "math" skills - get it? mad - math - math skills
This is the binary questin right?
And also at 13:26
The baby weighted 8 pounds on his 6th month, but he answered that the baby would be 4 pounds by 10yo.
1. He misread and only saw that N has to be a 3-digit number with digit sum 12, so then 930x4 = 3720.
2. I'd assume some calculation mistake, but the real error was buzzing in as soon as possible and not checking. Of course, they want to "put on a show" and be as fast as possible, and look very good. It happens with athletes, too, and sadly the careful ones are criticized.
At 29:20, I'm getting 1.55. What am I missing?
N : Num of students
P : Total num of pets.
A : Average num of pets per student
N1 = 0.8 * N: num of students with >= 1 pet
N2 = 0.3 * N: num of students with >= 2 pet
N2 = 0.05 * N: num of students with >= 3 pet
P >= N1*1 + N2*2 + N3*3
A = P / N >= (N1*1 + N2*2 + N3*3) / N = 0.8 + 0.3*2 + 0.05*3 = 0.8 + 0.6 + 0.15 = 1.55
The correct formula is 0.5 + 0.25 * 2 + 0.05 * 3 which is 1.15. Look up Inclusion-Exclusion principle.
Where’s luke?
13/6
Looks like India vs China
🤣
13:50, how can both of them mess up such an easy question!
this is not their level
@@igravier9187 that should be
pressure + he instabuzzed
Did they just memorise all the answers from AoPS??
They probably done all the problems in AoPS.
@@Michael89240what is AoPS ? I see everyone is talking about this ? Can u help me here
@@deadlypyre Art of problem solving books
has there ever ben someone that didnt look like the stereotypical math competition competitor?
rip rich
2+3=5 1 week =7 days 5/7
1 10 4/7 2019
25%
Vienna ain't no country I ever heard of, do they speak English in Vienna?
hahaha yeah go sam!! haha yeah maybe next year :D
1:05:51 synchronized moment 😂
5/7
My favourite is Luke, how fast he is
daniel goooooooooooooooooooooooooooooooooooooooooooooo
4 2/3 1/2
2 3
1/4