Oh sweet 16

by shiningsunnyday, Nov 27, 2016, 2:53 PM

Combo 3 homework (Medium) wrote:

$16$ students took part in a mathematical competition where every problem was a multiple choice question with four choices. After the contest, it is found that any two students had at most one answer in common. Prove that there are at most $5$ problems in the contest.

Solution

Tidbit

combinatorics

enumerative

AMSP

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3 problems over 1 night?!?!

mhm

This post has been edited 1 time. Last edited by shiningsunnyday, Nov 28, 2016, 2:12 AM

by zephyrcrush78, Nov 27, 2016, 5:51 PM

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hmm we are lacking in algebra

what's that

This post has been edited 1 time. Last edited by shiningsunnyday, Nov 28, 2016, 2:14 AM

by agbdmrbirdyface, Nov 27, 2016, 5:53 PM

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The Chuck Norris Hard problem, in retrospect, is not too much harder than many of the hard problems.

except a few of the H problems are problems that until recently have been unsolved

This post has been edited 1 time. Last edited by shiningsunnyday, Nov 28, 2016, 2:14 AM

by aftermaths, Nov 27, 2016, 7:28 PM

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this guy is an absolute legend. much love wherever you are Michael
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amazing blog
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hi i randomly found this
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contrib /charmander
by mathmaster2000, Apr 16, 2017, 4:59 PM
for contrib
by SomethingNeutral, Mar 30, 2017, 7:57 PM
all contrib requests added I usually get to posting every night after running on the treadmill and showering, posting my favorite problem(s) I did during the day.
by shiningsunnyday, Jun 16, 2016, 4:37 AM
Since problems is plural, he might post multiple problems through different posts in one day...
by zephyrcrush78, Jun 15, 2016, 8:37 PM
hi can i have contrib?
by wu2481632, Jun 15, 2016, 8:36 PM
Hello it is called problems of the DAY
by Temp456, Jun 15, 2016, 8:17 PM
10th shout lol
How often will this blog be updated?
by zephyrcrush78, Jun 15, 2016, 5:24 PM
why are we counting shouts

contrib pls
by MathAwesome123, Jun 15, 2016, 2:55 PM
eighth shout
contrib pls
by skipiano, Jun 15, 2016, 2:21 PM
seventh shout
Can I be contrib?
Though probably not because it's not like I'll post anything anyways :/ :/
by zephyrcrush78, Jun 15, 2016, 1:20 AM
sixth shout

new goal: get the shouts that are congruent to 1 mod 5
by DeathLlama9, Jun 15, 2016, 12:33 AM
fifth shout >
by budu, Jun 14, 2016, 10:04 PM
4th yay
by EpicSkills32, Jun 14, 2016, 9:10 PM
third shout
by skipiano, Jun 14, 2016, 2:35 PM
Second shout
by zephyrcrush78, Jun 14, 2016, 12:06 AM
omg yesssss
by DeathLlama9, Jun 13, 2016, 2:19 PM

270 shouts

Problems of the day

Oh sweet 16

by shiningsunnyday, Nov 27, 2016, 2:53 PM

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