CSAT Quant PYQs(Topic-Wise) - Permutation & Combination | Part-1 | UPSC CSE Prelims 2023 | Sunya IAS

Поделиться
HTML-код
  • Опубликовано: 23 дек 2024

Комментарии • 45

  • @xyz5409
    @xyz5409 Год назад +13

    No amount of Tricks and jugad videos on youtube about csat gave me as much confidence as these videos by sir ! thanks a lot shunya for the free initiative and SIR for your lucid explanations

  • @anamseraj8189
    @anamseraj8189 11 месяцев назад +9

    Quite literally the best video on this topic. Wasted 2 hours before I found this gem

  • @sunflxwerrr
    @sunflxwerrr 8 месяцев назад +3

    53:06 sir, i think an alternative easy method to solve the 14th question, or any of "atleast" questions, is to subtract that particular case from all cases
    in here the case "atleast one coffee in a row" would be (total cases - ['no coffee in a row at all' = all 3 positions in a row out of 3 rows to be occupied by 3 tea cups])
    total cases: (9!/6!x3!) = 84
    cases of 3 tea cups in a row = 3
    (3 teas in 1st row + 2nd row + 3rd row, remaining 2 rows all coffees)
    hence, the solution is 84 - 3 = 81

    • @satvikyou7798
      @satvikyou7798 7 месяцев назад

      exactly. i also did the same. it takes less than a minute to do by this way

  • @vaibhavthakur3775
    @vaibhavthakur3775 Год назад +8

    Thank you so much for this series.
    Helped me in clearing CSAT as well as Prelims 2023. 💯

  • @Rahul_5801
    @Rahul_5801 7 месяцев назад +1

    Wonderful sir.. thanks for explaining in very conceptual manner

  • @utkarsh4298
    @utkarsh4298 9 месяцев назад +2

    Thanks for this session! A lot more clarity on the topic. No shot I’d be attempting that 13th question. Too stressful.

    • @Ramu4312
      @Ramu4312 9 месяцев назад

      I too thought the same

  • @dew_bindu_drop
    @dew_bindu_drop Год назад +6

    Sir explanation is fantastic 👌

  • @yadavpallapati7587
    @yadavpallapati7587 Год назад +3

    Super sir

  • @vamseekrishna7177
    @vamseekrishna7177 Год назад +2

    Very well explanation sir

  • @krish9523
    @krish9523 10 месяцев назад +1

    48:02 ..sir why lengthy we have to check only 2..or 3 for 100th place

  • @mahimabhola2908
    @mahimabhola2908 Год назад +2

    Thank you sir😊

  • @sankalpwaghmare
    @sankalpwaghmare Год назад

    thank you so muc hsir

  • @stoicsoul5236
    @stoicsoul5236 7 месяцев назад

    Question number 13 no need to try out 24 combinations, rather 7 combinations are only possible as any combination greater than 329 will make the third row number exceed 1000

  • @pirajibalane4212
    @pirajibalane4212 Год назад

    Thanks

  • @shwetaahlawat7586
    @shwetaahlawat7586 Год назад +10

    This question can be solved in under a minute by combination formula 9C3 minus 3( where no row has coffee) formula. 9C3 is 84 and 84-3= 81

    • @exoticindiaa
      @exoticindiaa Год назад

      Shweta you have amazing feet, long and slim 👣🤤

    • @vvtindia
      @vvtindia Год назад +8

      9 object in nine places > 9 ! Permutations
      But out of nine 6 coffe and 3 tea are same > 9!/ ( 6! * 3!) = 84 possible arrangements
      Possible rows with no coffee= 3
      Ans=84-3=81.

    • @nikhilmarne8608
      @nikhilmarne8608 Год назад

      ​@@vvtindia 🙌🙌🙌🙌

    • @BenitaVinod
      @BenitaVinod Год назад +1

      @@vvtindia tq bro

  • @satvikyou7798
    @satvikyou7798 7 месяцев назад

    41:17, there is another way for question 12. we go by 3rd and 4th statements. we assume 4 in 1st, 2nd and 3rd place(5 cases possible on writing down) and we assume 1 in 2nd, 3rd and 4th places ( 4 cases possible). out of 9 strike down the 3 repeated cases. we would be left with 6. BTW its very easy to see the answer and explain. i dont know if its just for me but when ever you see your ready made solution in your bottom left or right corners and write the same on board without solving it sincerely, i feel not so confident your teaching !

  • @aspirant7907
    @aspirant7907 Год назад +2

    Sir,how to know a ques has red flag? Please guide..as due to panic..one can start the red flag ques

  • @user-kg1uu6kg2w
    @user-kg1uu6kg2w 6 месяцев назад

    Hacker hai bhai hacker...itni aasani se kon samjhata hai

  • @shalinishalu888
    @shalinishalu888 9 месяцев назад +1

    small correction sir, 7th question answer is option b ; 6

  • @niranjankumar2578
    @niranjankumar2578 Год назад

    Thank you so much sir 😊, Explanation super 👌

  • @thirumurugan3344
    @thirumurugan3344 9 месяцев назад

    Confusion in 1 and 9 th question. How in 1 St (2)^5 in 9 it is 6+6+6+6 . Anyone pls explain

  • @leisuretimeentertainer3296
    @leisuretimeentertainer3296 11 месяцев назад +1

    Sir board ka sman aka kyu biathte ho thida side hokar bathiya .... board mai thk se nhi dikhta apki wajah sa

  • @BreakFeast
    @BreakFeast Год назад +1

    When will you upload PDFs to Permutation & Combination and Miscellaneous lectures?

    • @salmanchougale4571
      @salmanchougale4571 Год назад +2

      In this video we are not able to read a question properly

  • @saurabhsuman9630
    @saurabhsuman9630 Год назад

    Is this the last topic to be covered

  • @GurpreetKaur-yf6os
    @GurpreetKaur-yf6os Год назад

    Sir Q11 k 5 ways ho geee 4 nhi

  • @sidfulmali9053
    @sidfulmali9053 8 месяцев назад

    Hepal latya question tr show krt ja

  • @P___6776
    @P___6776 Год назад

    Arey sir thoda hindi bhi bol lijiye india me rhte hai England me nhi

  • @sharanabasavapunneshetty3808
    @sharanabasavapunneshetty3808 Год назад

    Question 13 has 3 possiblity not 2 3 no. are 297 273 293

  • @user-amanyadav428
    @user-amanyadav428 Год назад

    we are not able to read the questions properly kindly consider it while making upcoming videos.

  • @ardneham2215
    @ardneham2215 Год назад +2

    Thank you sir

  • @lokendrasinghthakur1277
    @lokendrasinghthakur1277 Год назад

    Thank you sir😊

  • @saurabhpatil5252
    @saurabhpatil5252 8 месяцев назад

    Thank you sir

  • @kazmi.maryam96
    @kazmi.maryam96 7 месяцев назад

    Thank you sir🎉

  • @nikitapatel2423
    @nikitapatel2423 6 месяцев назад

    Thankyou so much sir