Permutations and Combinations - Permutions.

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  • čas přidán 30. 05. 2017
  • Permutations are easy to understand...but take time to get to why we work them out the way we do so you can understand them better. This video also looks at how permutations differ from combinations, and well as looking at simple permutations, permutations with limited spaces, permutations with repeats, and permutations in a circle.
    • permutations and combi... To support free math on Patreon (thank you): / tecmath To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: paypal.me/tecmath?locale.x=en_AU
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Komentáře • 25

  • @bandini22221
    @bandini22221 Před 2 lety +2

    Thank you. I haven't studied these things for 50 years and have forgotten so much.

  • @IAmAwesomeSoAreYou
    @IAmAwesomeSoAreYou Před 6 lety +8

    Your voice is so soothing ~

  • @captaincrunch845
    @captaincrunch845 Před 7 lety +17

    It's 2:28 a.m. where I'm from and I just studied this for 3 hours. That's crazy

  • @katlin8474
    @katlin8474 Před 7 lety +12

    OMG dude thank you for this... you earn a sub

  • @choOz
    @choOz Před 7 lety +9

    Great video, really clear and visual explanation. Bring the one on combinations soon!! And add variations please! I have an exam on monday on this stuff.

    • @tecmath
      @tecmath  Před 7 lety +2

      I saw your comment....and got busy. The combinations video is being uploaded. Good luck on your exam.

    • @choOz
      @choOz Před 7 lety +1

      Thanks a lot mate! Ill get right on it.

  • @MrLizrd
    @MrLizrd Před 5 lety

    Amazing, thank you lots

  • @rlight4378
    @rlight4378 Před 5 lety

    Nice! Thanks your realy take time to explain it. Thanks for the video I would like to see more videos from you! (Even if this was a long time ago)

  • @salthesadmanshark5645
    @salthesadmanshark5645 Před 4 lety +1

    Great voice 🎉

  • @adengoher4343
    @adengoher4343 Před 3 lety

    Thank you!

  • @prajwol45
    @prajwol45 Před 2 lety

    Thanku so much for ur videos I passed my GED maths with 174 scores

  • @tonybarfridge4369
    @tonybarfridge4369 Před 4 lety +1

    Do u have any shortcuts for finding part permutations of words with repeated letters? Thanks 😁😊

  • @pianoexpert123
    @pianoexpert123 Před 7 lety +1

    BLESS

  • @michelef406
    @michelef406 Před 6 lety

    In how many different ways can i arrange my n number of spices if i have a k number of spaces in my shelf? =D

  • @vineethreddy.s
    @vineethreddy.s Před 7 lety

    Nice....

  • @debidattamishra8677
    @debidattamishra8677 Před 5 měsíci

    why isn't the circle one infinite arrangments since he circle has infinite different points to set the letters at?

  • @cloudgalaxy9231
    @cloudgalaxy9231 Před 2 lety

    Why do we divide by the number of rotations in the circle? I just don't get it. Why don't we divide it by 4! or 3! because that's the number of extra combinations per arrangement, right?
    I get that we have the formula, but I don't understand the formula.

  • @gwsljp
    @gwsljp Před 2 lety

    I love you

  • @sourayeaturaye2498
    @sourayeaturaye2498 Před 6 lety

    For the puppy question the answer should be 40, we shouldn't find the factorial for the 3, what if we had the word Tennessee, we will not do the factorial for the n,e and the s.

  • @oghenemiseoru5362
    @oghenemiseoru5362 Před 3 lety

    In d last example y didn't u do 6!/6 like in d second to d last example

  • @diegislac5116
    @diegislac5116 Před 5 lety

    So basically people in a row is just the amount of seats factorial

  • @dyland9157
    @dyland9157 Před 7 lety

    ♨️💯🛃

  • @tdpencil2811
    @tdpencil2811 Před 4 lety +1

    I think it's flip-flopped, but okay.