A set Theory problem from JEE Advanced 2022

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  • Опубликовано: 2 окт 2024
  • This problem requires the use of Venn Diagram. I think it is the most effective path to figuring out this solution.

Комментарии • 43

  • @musictwilight1682
    @musictwilight1682 3 месяца назад +8

    Amazing! 💫
    Sir,I request you to explain us more Jee Advance Problems I'm a jee Aspirant.(Vector,3D,Probability,Matrices,Calculus etc...)
    Keep up good work. ❤️❤️❤️

    • @Dhaneesh_7
      @Dhaneesh_7 3 месяца назад

      Do in Coaching Institute

  • @Mathematical-Mind
    @Mathematical-Mind 3 месяца назад +4

    Sir, could you please make a video covering graph theory? I’m trying to learn it for the amc 10/12.

  • @amydebuitleir
    @amydebuitleir 3 месяца назад

    You could also take a shortcut. At 12:30 we know that the number of people who have either 2 or 3 of the symptoms is 30 + 40 + 50 + 60. Subtract that from 900 to get the number of people with either 0 or 1 symptoms, which is 720. Then calculate the probability. It's a good idea to do it both ways to double-check the answer.

  • @timwood225
    @timwood225 3 месяца назад +1

    A comprehensive lesson both in general terms, and those specific to this problem. Absolutely worth working through - if for no other reason than to see how many mistakes and how many kinds of mistakes you can make if you don't already know how this works. And how to do it correctly. An education in fifteen minutes!

  • @Abby-hi4sf
    @Abby-hi4sf 2 месяца назад

    wonderful to see van diagram and revising it.

  • @MothNeo
    @MothNeo 3 месяца назад

    8:48 why is this "n(F U C) = 330" and not "n(F U C) + n(F ∩ C) = 330"?

  • @Dhaneesh_7
    @Dhaneesh_7 3 месяца назад +2

    A classy problem ✅

  • @jameswood441
    @jameswood441 3 месяца назад +1

    You did more work than needed to solve the problem. Once you had the intersections, just subtract that from 900.

    • @PrimeNewtons
      @PrimeNewtons  3 месяца назад +10

      Oh. I was trying to fill all the spaces in case someone needed to learn something.

    • @348bac
      @348bac 3 месяца назад +3

      Always best to show the whole process rather than let the viewer decide fir themselves what happens at the rest of the stages

  • @thems2002
    @thems2002 3 месяца назад

    Sir please make videos on real analysis....pleaseeeeeeeeeeee

  • @davidgagen9856
    @davidgagen9856 3 месяца назад

    Can't we just plug nos into the Venn diagram?

  • @mab9316
    @mab9316 3 месяца назад

    Elements present / Elements common

  • @desert2586
    @desert2586 3 месяца назад

    Hi, I was doing this on my own and I can’t understand what I did wrong.
    the notation i used was
    f= only fever
    b=only breathing etc
    fb= fever and breathing problems
    fc= fever and cough problems etc
    fbc= fever breathing and cough problems
    n= no problems
    160= f + fc + fb (alr subtracted the 30 ppl w all problems)
    190= c + fc + bc
    190= b + fb + bc
    330= f + c + fc
    340= f + b + fb
    670= 2f + c + b + fc + fb
    670= 160 + f + b + c
    one symptom = 510
    and then as i try to solve for other stuff i get diff answers and idk why

  • @user-ky9kv5je9s
    @user-ky9kv5je9s 3 месяца назад

    I disagree. People who have at most one symptom are the 420 people in the Vann diagram. All minus the 480 who have no symptom.

    • @woodchuk1
      @woodchuk1 3 месяца назад

      That would be the number of people with at LEAST one symptom, not at MOST one.

    • @user-ky9kv5je9s
      @user-ky9kv5je9s 3 месяца назад

      @@woodchuk1 You are right! Sorry

  • @Subham-Kun
    @Subham-Kun 3 месяца назад +9

    This is the simplest form of probability that is taught in 9th grade

    • @latexa2993
      @latexa2993 3 месяца назад

      : 🤓

    • @KRO_VLOGS
      @KRO_VLOGS 3 месяца назад +2

      Hum sab 11th me Sikh rhe hai aur tuzhe alag se 9th me padhaya

    • @ARounDeRoP
      @ARounDeRoP 3 месяца назад +11

      Yeah kid you are the reincarnation of Newton or Einstein

    • @shashankmaurya1263
      @shashankmaurya1263 3 месяца назад

      @@KRO_VLOGS tune nahi padha lekin 9th/10th me hota h probability

    • @KRO_VLOGS
      @KRO_VLOGS 3 месяца назад

      @@shashankmaurya1263 I think you meant the n(a union b) formula

  • @holyshit922
    @holyshit922 3 месяца назад

    It looks like inclusion-exclusion principle

  • @HNParty
    @HNParty 3 месяца назад

    if 630 persons are infected, so only 270 people are non infected. am I wrong?

    • @Dhaneesh_7
      @Dhaneesh_7 3 месяца назад

      Only 420 are infected do focus on sets union

    • @johnka5407
      @johnka5407 3 месяца назад +1

      Group F was with fever, but not only with fever. In F there are also people with other symptoms. Someone may be in two or three groups, but still is just 1 person.

  • @KPunktFurry
    @KPunktFurry 3 месяца назад +1

    hello first of all,
    you are right it looks long but the singel steps should be easy i think you only have to bring all the infos in a equention.
    3:48 that have to be the first step ok
    6:01 i see the problem AND the solution at this point! we check out how many elements are the same and how many not and add those values so becauce ther is no other posible case we have this equantion and it is always true make sense!
    7:38 of cause becauce than you have a nice overview!
    9:28 ok there it will be hard to understand for me becauce i have never learnd quantity theory!
    10:39 ok an normal equantion that should be also posible for me!
    12:05 ok thats realy not as difficult as i thought!
    13:06 ok the rest is easy
    14:40 allright anybody make mistaks!
    15:39 ok basicly we devide the sum of this numbers by the count of all people right?
    16:42 you found a mistake afterwords :D but that is ok! so now i am a bit more claver! xD
    16:49 and your true sentence at the end nice!
    LG
    K.Furry

  • @shashankmaurya1263
    @shashankmaurya1263 3 месяца назад

    Solution could've been much simpler.
    Also I was able to solve it orally😊

    • @AadiSrivastava-sp9zn
      @AadiSrivastava-sp9zn 3 месяца назад +1

      how? can u tell me how u solved it orally i haven't studied 11th probability yet. So if it requires some concept of 11th probability then tell me I will read prob. first and then try it once again

    • @ARounDeRoP
      @ARounDeRoP 3 месяца назад

      @@AadiSrivastava-sp9zn no actually it’s just set theory with simple concept of probability: Favourable/Total

    • @shashankmaurya1263
      @shashankmaurya1263 3 месяца назад

      @@ARounDeRoP right

    • @epikherolol8189
      @epikherolol8189 3 месяца назад

      ​@@ARounDeRoPYeah...

    • @knupug
      @knupug 3 месяца назад

      That was fun! Thanks