Crash Course in Combinatorics | DDC #1

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  • Опубликовано: 1 фев 2025

Комментарии • 28

  • @mathemaniac
    @mathemaniac  5 лет назад +10

    This video is uploaded because less than half of the viewers who responded to the Google form forms.gle/QJ29hocF9uQAyZyH6 says that they know some basics of combinatorics. So in order to make sure we are on the same page, I need to make this video. Even if you know these concepts, it is still worth going over to clear some concepts up. That said, I need a larger sample size to determine the overall math level of my audience, so please fill in that form if you haven't already.

  • @trotamix8365
    @trotamix8365 3 года назад +31

    This video is probably the best overview I've seen of Combinatorics.

  • @charlievane
    @charlievane 2 года назад +4

    Thanks

  • @vaishnavchandra5220
    @vaishnavchandra5220 3 года назад +12

    😊3b1b vibe.... So calming.

  • @koktszfung
    @koktszfung 7 месяцев назад +1

    I immediately understand the inclusion exclusion principle using the venn diagram so I think it very much aided my understanding

    • @koktszfung
      @koktszfung 7 месяцев назад

      The idea of overshooting when taking away the overlapping region is very easy to understand

  • @ramakrishnasen4386
    @ramakrishnasen4386 4 года назад +11

    Keep up the good work buddy! Itwould be nice if you could make a plalisy on olympiad mathematics ( just problem solving and possible applicatins of ideas in math)

    • @mathemaniac
      @mathemaniac  4 года назад +1

      What do you mean by "possible applications of ideas in math"?

    • @ramakrishnasen4386
      @ramakrishnasen4386 4 года назад +3

      @@mathemaniac Well simply put I meant some real good things to try while solving olympiad problems

  • @ramakrishnasen4386
    @ramakrishnasen4386 4 года назад +4

    Why do I not get good youtube recommendations like these!

  • @luissantiago4768
    @luissantiago4768 2 месяца назад

    Really nice video. I've never seen the Inclusion-Exclusion principle being taught that way.

  • @hembhagat742
    @hembhagat742 3 года назад +6

    The explanation is very good.

  • @kumark25170
    @kumark25170 5 лет назад +5

    Excellent

  • @wwmheat
    @wwmheat 3 года назад +1

    Fantastic explanation! Thank you!

  • @SphereofTime
    @SphereofTime 10 месяцев назад +1

    0:06

  • @luyombojonathan7715
    @luyombojonathan7715 2 года назад +1

    Thanks alot !!! Cheers

  • @gym5959
    @gym5959 2 года назад +1

    What resources are you referring to in order to make these videos ?

  • @albertyeung5787
    @albertyeung5787 2 года назад +1

    very clear explanation

  • @LK-sk9wl
    @LK-sk9wl 2 года назад +2

    Why did you add 5 at 6:07

    • @elicrotsn5085
      @elicrotsn5085 Год назад +3

      Because those 5 shared destinations between the three airlines were also 5 subtracted destinations shared between the blocks of two airlines. If all airlines share 5 common destinations it means consequently that the groups of two airlines also share each of those 5. The process of subtraction of the shared destinations in groups of two airlines has the objective of not overcounting how many available destinations you can fly to, but it has the flaw that if the places are shared by the three airlines, those destinations just dissapear by the subtraction. So you also check when the destinations are shared by the three airlines to add them back in.
      I hope it's understandable and still useful after six months lol

    • @weamibrahim2146
      @weamibrahim2146 Год назад +2

      ​@@elicrotsn5085I had the same question and I finally understand. Thanks!

  • @oyetundebello1436
    @oyetundebello1436 4 месяца назад

    Why did you add the 5 destinations all flights back the equation

    • @pascale3847
      @pascale3847 Месяц назад

      I think because they were subtracted one too many times in the previous steps and so need to be added back in

  • @sohelhossain9176
    @sohelhossain9176 3 года назад

    👍👍👍

  • @thelevhart7980
    @thelevhart7980 3 года назад +3

    Is it just me or does Mathemaniac sound like Lord Frieza?
    Definitely got that elegant accent and tone