NUMBER THEORY 01: Divisibility of Integers | Math Important Concept IOQM

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  • Опубліковано 22 жов 2024

КОМЕНТАРІ • 168

  • @PW-OlympiadWallah
    @PW-OlympiadWallah  Рік тому +5

    🔗 Playlist 🔗
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  • @only__hArsH
    @only__hArsH Рік тому +10

    1:36:22
    Sir can this question be solved as follows ?
    The given expression 1^1997 + 2^1997 +...+1996^1997 is divisible by 1 + 2 ...+ 1996 = k.
    And k = 998 × 1997 ( Calculated by using Sum of n terms of AP).
    And this implies that 1^1997 + 2^1997 +...+1996^1997 is divisible by 1997

  • @hamzahkhan.
    @hamzahkhan. Рік тому +45

    most of the questions are from pathfinder senior

  • @mv84-k5p
    @mv84-k5p Місяць тому

    sir for hw question we can first prove that 1^1987 + 2^1987.....n^1987 is divisble by n + 1, since n+1 and n+2 are consecutive numbers their hcf to be 1 , hence proven

  • @prerakagarwal6717
    @prerakagarwal6717 5 місяців тому +4

    divisiblity rule of 48 is that the number should be divisible by 2power 4 and 3

  • @Prathamesh_Laddhad
    @Prathamesh_Laddhad Рік тому +8

    31:45 Divisibility of 48 - if the number is divisible by 3 and 2^4 then it is divisible by 48 i.e if number's last 4 digit is divisible by 16 and sum is divisible by 3 then the whole number is divisible by 48

  • @adarshpradhan3554
    @adarshpradhan3554 Рік тому +16

    lecture achaa laga sahab.... 😂❤❤

  • @Granny2456
    @Granny2456 4 місяці тому

    For number to be divisible by 48
    In the prime factorisation of number Power of 2 must be greater than or equal to 4 and power of 3 must be greater than or equal to 1

  • @priyeshranjan8610
    @priyeshranjan8610 8 місяців тому +1

    48 Ka divisibility Rule 2 Power 4 and 3, Power 1

  • @JoshikaKaliraman
    @JoshikaKaliraman Рік тому +4

    31:48 Sir Divisibility rule of 48 is that the no should be divisible by 16 and 3

  • @RoshanRai-g2m
    @RoshanRai-g2m 2 дні тому

    Sir... which is best Book for number theory??? Please! Suggest that book to buy??

  • @Fbhhx
    @Fbhhx Місяць тому

    A number which is divisible by 16 and 3 watt which number also divisible by 48

  • @TMM7777
    @TMM7777 5 місяців тому +1

    Divisibilty rule of 48=the number should be divisible by 16 and 3 then the number divisible by48 i am right sir

  • @SiddhantaGhosh-qp4jx
    @SiddhantaGhosh-qp4jx Рік тому +2

    1:36:25
    Yaha pe sir agar main 1¹⁹⁹⁷+2¹⁹⁹⁷+....+1996¹⁹⁹⁷ ko agar 1+2+3+...+1996 ka multiple Maan k agar 1+2+3+...+1996 ka sum n(n+1)/2 formula se nikal le toh woh 1997 se divide hojayega na toh isse toh solve hojayega na sir??

    • @dibyamshumohapatra2890
      @dibyamshumohapatra2890 Рік тому +1

      na bhai,1¹⁹⁹⁷+2¹⁹⁹⁷+......+1996¹⁹⁹⁷ ko 1+2+3 ....+1996 ka multiple ham assume nahi kar sakte

    • @thevibetree1
      @thevibetree1 9 місяців тому

      You can also think it as an arithmetic progression

  • @AfsanaKhan-d5f
    @AfsanaKhan-d5f Рік тому +2

    Divisibility rules of 48=2^4and3

  • @dindahaadecoaching
    @dindahaadecoaching Рік тому +1

    31:23 48 divisibility rule= 2⁴ se divisible ho, aur 3 se bhi ho

  • @kumarisurily9812
    @kumarisurily9812 Рік тому +4

    31:34 divisibility rule of 48 : the given number must be divisible by 2^4 and 3.

    • @soumendraacharya1168
      @soumendraacharya1168 Рік тому +3

      bro i am in 9 th getting many problems in this plz helpn

    • @kumarisurily9812
      @kumarisurily9812 Рік тому +3

      ​@@soumendraacharya1168First of all I want to know how did you know that I am boy not a girl.
      BTW I am also in 9th class .😊😊😊

    • @soumendraacharya1168
      @soumendraacharya1168 Рік тому +3

      @@kumarisurily9812 sorry if ur a girl or a boy whatever . but plz help what can i do because i can't do anything. i want to know that if ur facing the same problem or not

    • @kumarisurily9812
      @kumarisurily9812 Рік тому +3

      @@soumendraacharya1168 hello, what is your name? My name is Mayank.
      I was also facing same situation in beginning. But, now I am not feeling like this because maine iski preparation me ek chij samajh Li hai ki quit nhi karni h chahe kitna hi difficult kyun na ho aur main laga rha aur lecture ko samjhne ki koshish krte rha phir.
      Mujhe jo problem aa rhi thi wo ye thi ki sir jis approach se question solve kar dete hain wo mere dimaag me aati bhi nhi thi. Phir maine, jab sir question solve karate usse pehle apna attempt Dene ki koshish krta 5-10 min answer aaye ya naa aaye. Isse hum question ko har different tarike se approach karte rhe aur dhire dhire samajh aane laga ki konsi approach se ye question banegi Bina jyada time lagaye.
      My suggestion to you- give up mat krna.
      Waise toh mera region south Bihar hai jahan cutoff 10 ke paas rahega saayad, tumhara region kya hai waise?

    • @soumendraacharya1168
      @soumendraacharya1168 Рік тому

      @@kumarisurily9812 odisha and i don't know cutoff can u tell me

  • @Chessplayer2008
    @Chessplayer2008 Рік тому +4

    sir in 8:12 why y, a, x need to be natural number, if I divide -6(y)by 2(x) then a must be - 3 , and they are not natural numbers.

  • @vihantiwari8736
    @vihantiwari8736 4 місяці тому +2

    41:47 question starts
    1:18:41 note

  • @bhaveshpandey6864
    @bhaveshpandey6864 Рік тому +3

    2:00:00

  • @kumkumgaur5204
    @kumkumgaur5204 Рік тому +4

    18:17 ----- 2^7

  • @nileshmeena2511
    @nileshmeena2511 9 місяців тому

    1:47:32 sir if we solve them directly than there result is 1897^n that is divisible by 1897 is this is correct?

  • @ravinderrathod
    @ravinderrathod 7 місяців тому +1

    Your teaching is fabulous sir

  • @ShivanshsCricketShorts
    @ShivanshsCricketShorts Рік тому +1

    At 57.43 what if n+1^2 is in the form 121k-11 then( n+1)^2+11 would be divisible by 11 so you need to prove that (n+1)^2 will not be in form 121k-11 so how to prove this???

    • @arsh_arora10
      @arsh_arora10 3 місяці тому

      I see your comment multiple times, can u tell me can I clear ioqm if I start today (I have started number theory 5 days ago) (class 10th) please bro, it there are any possibility then how.???

    • @nitroNM8328
      @nitroNM8328 2 місяці тому

      @@arsh_arora10 Just Do Geometry

  • @basubk6643
    @basubk6643 Рік тому +3

    Sir homework question ka solution bi upload kardo pls...

  • @Dgoat204
    @Dgoat204 3 місяці тому

    31:42 The no should be divisible by both 16 &3

  • @ShivanshsCricketShorts
    @ShivanshsCricketShorts Рік тому

    Hw question ka ans yeh he kya ki
    1^1997+2^1997...... Yeh number n+1 se divisible hoga x^odd+y odd ki identity se
    Ab n+1,n+2 consecutive number he and consecutive number are always comprime hence n+2 se divisible nahi hoga??
    Iska directly n+2 se karke wala method koi batado kese karenge

    • @Lypheal
      @Lypheal Рік тому +3

      Bhai 1^1997 ko akela chod ke baki sab ko pair kar do to hamare paas (n+2)k + 1 ki form ka number aa jayega
      Thus vo hamesha 1 remainder chodega

    • @ShivanshsCricketShorts
      @ShivanshsCricketShorts Рік тому

      @@Lypheal oh yes thankyou 🙏🙏

  • @Rupram-zf8jx
    @Rupram-zf8jx Рік тому

    Divisibility rule of 48 if number is divisible by 16 and 3

  • @sgmk1623
    @sgmk1623 4 місяці тому

    48 - number should be divisible by 16 and3

  • @swatidixit3209
    @swatidixit3209 5 місяців тому +1

    App bahut accha sikhate hai sahab 😊😊

  • @Anonymous-mo7rk
    @Anonymous-mo7rk 3 місяці тому

    46:24
    1:37:06
    1:59:38

  • @Aditya-ry2pk
    @Aditya-ry2pk 11 місяців тому +1

    sir 132 is divisible by 11

  • @deepsikhadutaborah7
    @deepsikhadutaborah7 2 місяці тому

    2^4 and 3

  • @ArahanLegendYT
    @ArahanLegendYT 4 місяці тому

    :N 2:00:00

  • @jyotsnachaudhary7132
    @jyotsnachaudhary7132 4 місяці тому +1

    Thank you sir

  • @adityagamer2230
    @adityagamer2230 Рік тому +7

    48 ka divisibility rule 16 and 3 Sai divisble hona chahiye

  • @SamTheMathGuy
    @SamTheMathGuy Рік тому +3

    Divisibility is quite interesting ❤

  • @Gamydude-h7u
    @Gamydude-h7u 2 місяці тому

    Sir ye ch padhne se phle konse ch pdhna needed hai? Koi or bhi bta do pls

  • @shivankchauhan
    @shivankchauhan Рік тому

    2^4 and 3^1 are diided 48..... 31:33

  • @vihantiwari8736
    @vihantiwari8736 10 місяців тому +1

    Completed

  • @putulkumari6221
    @putulkumari6221 6 місяців тому

    when a number is divided by 48 it must have to divide by 16 and 3

  • @rdhgamers4664
    @rdhgamers4664 7 місяців тому

    Can we take 2,3 as divisor in the last question

  • @kumkumgaur5204
    @kumkumgaur5204 Рік тому +2

    Thank you sir 💗😌

  • @Dgoat204
    @Dgoat204 3 місяці тому

    18:14 if and only if last 7 digits are divisible by 128

  • @villagelife272
    @villagelife272 Рік тому +1

    Di visibility rule of 48 =2 ^4× 3^1

  • @Singingmode132
    @Singingmode132 Рік тому

    7.05 .Sir jab hum 20 ko 3 se divide karenge toh 2 remainder bchta hai toh sir 3 divisor toh hai magar factor nhi

  • @ManuBhoria-ep9oc
    @ManuBhoria-ep9oc Рік тому

    48 if divisible by 8,3and 2

  • @KDEDITZ7
    @KDEDITZ7 Рік тому

    48=16 and 3

  • @system0022_JAAT
    @system0022_JAAT Рік тому +1

    System 💫💥

  • @Navneets-Mystery
    @Navneets-Mystery 5 місяців тому

    38:22 if a/b then how b=0 ?

  • @GAURAVSINGH-hh6vb
    @GAURAVSINGH-hh6vb 4 місяці тому +1

    CAN ANYONE PLEASE TELL ME HOW TO SOLVE THE HOMEWORK QUESTION..(JUST GIVE THE SHORT-SHORT HINTS,LIKE HOW TO APPROACH AND SOME STEPS :).. THANKS....

    • @PoesyWords
      @PoesyWords 3 місяці тому +2

      Where are the practice questions

    • @PoesyWords
      @PoesyWords 3 місяці тому +1

      Where r the prctc qustns

    • @8523hineshnyati
      @8523hineshnyati 2 місяці тому +1

      Pair 1^1987 with n^1987, so:
      n+1 | n^1987+1^1987
      n-1+2 | (n-1)^1987 + 2^1987
      n+1 | (n-1)^1987 + 2^1987
      Let E be the expression of the question
      We can conclude that (n+1|E)
      if n+1 divides E, when it is divided by n+2, it will give a remainder of 1 for all values of n

    • @vrindavanjoshi-gk1li
      @vrindavanjoshi-gk1li Місяць тому

      ​@@8523hineshnyati
      Thanks for the explanation.

  • @Mohit-js1vm
    @Mohit-js1vm Рік тому

    The no. Should be divisible by 16 and 3.

  • @PushpenderKumar-mc5je
    @PushpenderKumar-mc5je Рік тому

    Sir kuch ques ko ham principal of mathematical induction se prove Kar sake hai ??? Plz reply sir.....❤❤❤❤❤

    • @topmemesLOL.
      @topmemesLOL. Рік тому

      Sahi kaha Bhai Maine bhi aisa socha tha

  • @jahnavikumari
    @jahnavikumari Рік тому +1

    Sir 7 se divisibility rule kya hota hai please bata dijiye

    • @drgarimagarg
      @drgarimagarg 6 місяців тому +1

      double the unit digit and subtract from the rest of the number. repeat. and if the last no is 0 or a multiple of 7 then it is divisible by 7.

  • @ravikantyadav4789
    @ravikantyadav4789 Рік тому

    Sir i am in class 9 it is for class 9 or any other class sir please tell me

  • @Garima_93
    @Garima_93 Рік тому +5

    Sir Maine algebra ke saare lectures dekhe h and I am able to solve 50% questions of module but I skip inequality because I am unable to understand it and I started number theory..
    Is it OK???
    I'm in 10th

    • @abhaypandey2452
      @abhaypandey2452 Рік тому

      BRO SAME THING
      I M ALSO IN 10TH
      FROM WHICH PLACE YOU ARE

    • @HereGupta
      @HereGupta Рік тому

      Bro module kaha p h IOQM batch ki??

    • @AmitChoudhary-lx2je
      @AmitChoudhary-lx2je Рік тому

      ​@@HereGupta you are in udaan batch

    • @AmitChoudhary-lx2je
      @AmitChoudhary-lx2je Рік тому

      ​@@abhaypandey2452 you are in udaan batch

    • @philomath69
      @philomath69 Рік тому +1

      Bhai same case
      Algebra me sab ban ja raha hai almost
      But I am not interested in inequality 🥲

  • @THINK_ASH
    @THINK_ASH Рік тому +1

    Sir
    Ioqm me saari class ke baccho ka paper same aata hai
    Maine kabhi diya nhi
    Pehli baar hai❤

  • @prakasht4939
    @prakasht4939 4 місяці тому

    What is solution for home work problem sir

  • @ishanarya16
    @ishanarya16 Рік тому

    Please upload lecture on app on the given timings.

  • @AdityaMishra-nd7cq
    @AdityaMishra-nd7cq Рік тому

    Best teacher ❤ love from skylord

  • @KhadimulIslam-un2gg
    @KhadimulIslam-un2gg 2 місяці тому +1

    41:12

  • @SaritaKumari-xz6oy
    @SaritaKumari-xz6oy 3 місяці тому

    1 39:41

  • @Nitinjeevlogs
    @Nitinjeevlogs 29 днів тому

    Is number theory easiest in IOQM ?

  • @आयुषिपरमार

    1:59:46 plz someone tell this

    • @8523hineshnyati
      @8523hineshnyati 2 місяці тому

      Pair 1^1987 with n^1987, so:
      n+1 | n^1987+1^1987
      n-1+2 | (n-1)^1987 + 2^1987
      n+1 | (n-1)^1987 + 2^1987
      Let E be the expression of the question
      We can conclude that (n+1|E)
      if n+1 divides E, when it is divided by n+2, it will give a remainder of 1 for all values of n

  • @kumkumgaur5204
    @kumkumgaur5204 Рік тому

    31:46 .... Sir 48 ka h 16 and 3

  • @HereGupta
    @HereGupta Рік тому +1

    Sir app P full screen nhi aa rhi
    IOQM batch k kisi bhi lecture per !!
    😔😔😞

  • @abhithegamer6485
    @abhithegamer6485 2 місяці тому

    i guess number theory is one of the most important topic for IOQM

  • @ARUNSINGH-eo8df
    @ARUNSINGH-eo8df 4 місяці тому

    16 3

  • @NiranjanKumar-lo5sc
    @NiranjanKumar-lo5sc Рік тому

    Sir live class kab hota ha

  • @Voley_shubham_08
    @Voley_shubham_08 2 місяці тому

    1:59:00 please solve this

  • @adityaanand9465
    @adityaanand9465 Рік тому

    18:19 128 ka last ka 12 digits divible hon chahiye

  • @abneeskaziallrounder9284
    @abneeskaziallrounder9284 4 місяці тому

    kaunsi class ka hai ye

  • @kailashthapliyal32
    @kailashthapliyal32 10 місяців тому

    Nice

  • @anushkasingh4996
    @anushkasingh4996 Рік тому

    this is For class 9

  • @kumkumgaur5204
    @kumkumgaur5204 Рік тому +2

    Dear brothers and sister can anyone tell me what is IOQM

  • @PushpenderKumar-mc5je
    @PushpenderKumar-mc5je Рік тому

    Have sahib ji hmm Kah rate the ki plz sequence and series Kara dijiye

  • @SaurabhYadav-hr9nk
    @SaurabhYadav-hr9nk 3 місяці тому

    Sor I can't think hw question is should be easy

  • @sakshampeddawad4869
    @sakshampeddawad4869 Рік тому

    best lecture sir

  • @anshitaaggarwal8530
    @anshitaaggarwal8530 Рік тому

    Proof of divisibility rule of 11??

  • @wkp8807
    @wkp8807 Рік тому

    for which class is for this????
    please reply anyone????

  • @chhayapatil2055
    @chhayapatil2055 7 місяців тому

    23:42

  • @Sanskarpub
    @Sanskarpub Рік тому

    Sir hindi midium wale ko dikat ho rahi hai caption unavailable hai sir uska kai upay bataeye

  • @prmotivation5641
    @prmotivation5641 3 місяці тому +1

    Play at 2x speed (TRANING CAMP vaale)

    • @Arpi5
      @Arpi5 3 місяці тому

      Yes

    • @Arpi5
      @Arpi5 3 місяці тому

      Did you complete both lec

  • @adityaanand9465
    @adityaanand9465 Рік тому

    31:37 2⁴×3¹

  • @Arpi5
    @Arpi5 3 місяці тому

    Who is here for ioqm traing camp goday lectures

  • @SOUND_W4VE
    @SOUND_W4VE 2 місяці тому

    Pathfinder vikas tiwari supremacy

  • @basubk6643
    @basubk6643 Рік тому

    Sir homework problem bi hogaya

  • @prmotivation5641
    @prmotivation5641 4 місяці тому +9

    Kon kon class 9th ka hai 😊

  • @emperorofuniverse4362
    @emperorofuniverse4362 Рік тому +1

    Sir you ar bmna

  • @B.Shankar07
    @B.Shankar07 Рік тому

    31:45 4:08 4:10

  • @soumendraacharya1168
    @soumendraacharya1168 Рік тому

    sir kuch samaj nahi aya

    • @topmemesLOL.
      @topmemesLOL. Рік тому

      Bhai aga tum naye ho tho kuch samaj nahi ane wala double dekho vedio ko yeh Olympiad aisa hi hai

  • @AkashChakraborty-h3l
    @AkashChakraborty-h3l 2 місяці тому

    Any one from BANGLADESH 🇧🇩🇧🇩

  • @pradeepmhadgut9385
    @pradeepmhadgut9385 4 місяці тому +3

    Kon Kon 2024 me doosri baar dekh raha hai

  • @darkshadow2167
    @darkshadow2167 3 місяці тому

    Pls pin my comment sir😅😢❤

  • @yugam6578
    @yugam6578 Рік тому +3

    aagya puraana teacher ab sir khaye ga
    just
    joking

    • @philomath69
      @philomath69 Рік тому +6

      Nahi padhna toh bhag ! 🗿
      Just joking