Prime Number or Composite Number?? How to know if the number is prime or not?

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  • Опубліковано 27 жов 2024

КОМЕНТАРІ • 94

  • @subratkumarsahoo577
    @subratkumarsahoo577 3 місяці тому +7

    As u check n+1 or n-1,
    Here seems n-1,n,n+1 consecutive so one must be divisible by 3

  • @skrahmanmathematics7731
    @skrahmanmathematics7731 21 день тому +1

    Don't follow this rule
    Example : according to this rule,the number 713 is a prime number but this number is a composite number . The factor of 713 are 1,23,31,713 so this a composite number

  • @sudhangshubhattacharya4991
    @sudhangshubhattacharya4991 3 місяці тому +1

    Take these integers,35,35+1=36,divisible by 3, but 35 is not a prime,rather than this 6m+1 or 6m-1 is a more substantial approach to the prime numbers

  • @randomgaming5971
    @randomgaming5971 5 місяців тому +3

    you taught us upto a level that we can say that 7099 can be a prime No. . . . But you didn't taught full thing. whi wali baat hai k billi ne sher ko sab sikha dia but darakht par charhna ni sikhaya, ta k agar sher usi ko khane aaye to wo apni jan bacha sakey.

  • @swapnilkadu639
    @swapnilkadu639 6 місяців тому +1

    Thank you so much mam for wonderful content..

  • @suryamouli253
    @suryamouli253 2 роки тому +2

    *_Good Evening ma'am...._*
    Ma'am firstly thank you so much for this video...
    *_Do It Yourself...._*
    Q) 7099 Is a prime number or not...??
    A) the rule is :
    * n+1 or n-1,the result is divisible by 3..if yes,then n can be a prime number....
    So, 7099+1=7100 which is not divisible by 3 as he sum of the numbers is 8 and is not divisible by 3..
    7099-1=7098 which is divisible by 3 as the sum of the number is 24 and is divisible by 3....
    Hence, 7099 can be a prime number....
    *_Thank you Ma'am...._*

  • @dr.kedargupta5855
    @dr.kedargupta5855 Рік тому +3

    i made notes as you got the concept clear and the answer to DIY is = It can be a prime no.

  • @Siddhi928
    @Siddhi928 2 роки тому +3

    Thanks Mam
    Please Make Video On This Content ⬇️
    7 multiply by 6 upon 8
    Please!🥺🥺

  • @mkfunandlearnvideos8470
    @mkfunandlearnvideos8470 Рік тому +3

    Excuse I wanted to know that how to know that till which number we have to take prime numbers for the prime factorization

  • @RoochishRoochish
    @RoochishRoochish 4 місяці тому

    Ma'am could you make videos on engineering mathematics and probability and statistics

    • @FastandEasyMaths
      @FastandEasyMaths  4 місяці тому

      Sure, will do so ASAP

    • @RoochishRoochish
      @RoochishRoochish 4 місяці тому +1

      @@FastandEasyMathsMa'am is 811 a prime number.And I wanted to ask few questions and share few more things regarding maths ,can I get your mail id .

  • @GoldySingh-hs8ds
    @GoldySingh-hs8ds 8 місяців тому +1

    If a number is not divisible by 3 even after doing+1 and -1 , can we be sure that its not prime number or it can still be prime number ??

    • @FastandEasyMaths
      @FastandEasyMaths  8 місяців тому +1

      It can be a prime

    • @gboldero1
      @gboldero1 Місяць тому

      Yes we can be sure because all prime numbers apart from 2 or 3 can be written in the form 6n+1 or 6n-1 and 6 is divisible by 3 and 2.

    • @gboldero1
      @gboldero1 Місяць тому

      ​@FastandEasyMaths
      Actually, apart from 2 and 3 all prime numbers can be written in the form 6n+1 or 6n-1

  • @samsonthomas4095
    @samsonthomas4095 Рік тому +2

    What if both the number divisible by 3, There can we say that is a prime number ? Or still it CAN be a prime number.

    • @FastandEasyMaths
      @FastandEasyMaths  Рік тому +3

      No any number which is divisible by any other except itself or 1 is not a prime number

    • @nandkumars.vanamali1336
      @nandkumars.vanamali1336 5 місяців тому +1

      No two numbers that have a difference of 2 will BOTH be divisible by 3

  • @RabiKundingi
    @RabiKundingi 5 місяців тому +7

    I can't understand

    • @progamerz8695
      @progamerz8695 3 місяці тому +1

      😢😢i can also not understand

  • @ashu-dnext
    @ashu-dnext 7 місяців тому

    I got a question to find prime number from four options a) 187 b) 221 c) 391 d) 307 I was ur trick and to my surprise, according to ur trick(n-1, n+1 div by 3): it tells all can be a prime number. TRICK FAILS??

    • @FastandEasyMaths
      @FastandEasyMaths  7 місяців тому

      No the truck also says all can be prime numbers, this trick actually helps you to discard numbers which surely are composite

  • @taj2900
    @taj2900 2 роки тому +14

    7099 can be a prime number

  • @rokhiminteh284
    @rokhiminteh284 Рік тому +2

    Mam can you please make a vedio for me please only composite numbers please 🙏🙏🙏🙏🙏🙏🙏

  • @Salar24
    @Salar24 3 місяці тому

    319 is subtracted by 1 = 318 is divisible by 3.

  • @RohanSB-tn5ii
    @RohanSB-tn5ii 10 місяців тому +1

    how to find a square root of a number

  • @MUKESHSHARMA-mi9hs
    @MUKESHSHARMA-mi9hs 2 роки тому +1

    I know these tricks, but still watching your vedio.

    • @rokhiminteh284
      @rokhiminteh284 Рік тому

      Hahahaha you are so funny

    • @Miora469
      @Miora469 4 місяці тому

      Please tell then my exam is near😢

  • @Shaafi668
    @Shaafi668 Рік тому +1

    is 451 a prime number?? u check ur fomula is wrong

  • @gboldero1
    @gboldero1 Місяць тому

    785 cannot be prime
    264 cannot be prime
    357 cannot be prime
    1,091 can be prime
    12,387 cannot be prime
    8,567 can be prime
    7099 can be prime

  • @Harmanpreet.
    @Harmanpreet. 7 місяців тому

    Yes mam, 7099 can be a prime number.
    Thankyou so Much for the trick mam, It was phenomenal 😄💟

  • @btswithu1555
    @btswithu1555 6 місяців тому

    Is 1141 a prime number or not

  • @WahidhaAsif
    @WahidhaAsif 8 місяців тому

    But for 49 it is not applicable.... As 48-1 divisible by 3.... But 49 is not prime

    • @FastandEasyMaths
      @FastandEasyMaths  8 місяців тому

      So, it's said that it can be a prime, not always it will b a prime pls watch the complete video to understand the trick properly

  • @Mairaxxofficial
    @Mairaxxofficial 11 місяців тому

    49 is odd and is still composite?

    • @FastandEasyMaths
      @FastandEasyMaths  11 місяців тому

      Yes, it is. Pls watch the video it's mentioned there properly😊

  • @Pyaremadhav_rr
    @Pyaremadhav_rr Місяць тому

    I also can't understand 😢

  • @jagadeeshkumar7724
    @jagadeeshkumar7724 2 роки тому +1

    Namaste.... This dont work for the number 91....... 91 is a composite number. 13×7=91. But the method u explained says 91 is a prime number.....

    • @FastandEasyMaths
      @FastandEasyMaths  2 роки тому +2

      No it doesn't pls see the video fully

    • @jagadeeshkumar7724
      @jagadeeshkumar7724 2 роки тому

      @@FastandEasyMaths Sorry for half cooked comments.... I apologize.
      Explained well

    • @arulmalar6185
      @arulmalar6185 Рік тому

      hey loser 91 lets apply 91+1 =92 %3 is not equal to zero...its not a primenumber

  • @SamsungUser-go6ed
    @SamsungUser-go6ed 7 місяців тому

    1009 is prime number but ur nethod says it can be composite number

    • @gboldero1
      @gboldero1 Місяць тому

      1009 can be prime because 1008 is divisible by 2 and 3

  • @NeerajkumarGangwar
    @NeerajkumarGangwar Місяць тому

    Thankyou

  • @AhmadWaseemQamarr
    @AhmadWaseemQamarr 3 місяці тому

    12387 is divisible by 3 so it's not a prime number.

  • @kushalsingh6857
    @kushalsingh6857 Місяць тому

    8:00 357 is not prime 7x51=357

  • @mfmasmr
    @mfmasmr 2 місяці тому

    thanks!

  • @FROBLOX.CREATE
    @FROBLOX.CREATE Місяць тому

    What are you talking about ! This better be 5th grade math. I asked my sister in 7th grade and she does not know!

  • @पढाईकरलेभाई
    @पढाईकरलेभाई 9 місяців тому

    नही अध्यापिका जी , 7099 कोई prime number नही है, इसके factors 1,229,31 और 7099 हैं।

  • @AmanKhan-sq5hx
    @AmanKhan-sq5hx 23 дні тому

    This has to be that worst method. Why just why..........!
    We have to check by usual square root but on top of that n+1 and n-1. In which universe is this fast 🤔

  • @ChaithraKj-h5n
    @ChaithraKj-h5n 5 місяців тому +1

    Thanks🙏

  • @zuberalam6626
    @zuberalam6626 Рік тому

    Thank you so much mam

  • @shachins
    @shachins 2 роки тому +2

    Ma'am thank you for this content

  • @shahrukhsiddiqui2106
    @shahrukhsiddiqui2106 Рік тому

    Divisible ka word mujhe thora hindi me smjhayega phr mere ye smjh ajaega?

    • @Itzy-ive-g-idle-4ever
      @Itzy-ive-g-idle-4ever Рік тому

      Meaning it can be divided with the number as in it is in the table of the number like 21 is divisible by 3 because it comes in its table as 3 x 7 = 21
      Hope this helps

  • @nandinikhuba7242
    @nandinikhuba7242 4 місяці тому

    7099 it can be a prime number

  • @khushboochaubey6445
    @khushboochaubey6445 2 дні тому

    Please in Hindi mam please 🥺🥺🥺🥺🥺🥺🥺🥺🥺🥺

  • @srijanpandey78
    @srijanpandey78 Рік тому

    Illogical, for instance 247

  • @RabiKundingi
    @RabiKundingi 5 місяців тому

    Tell me deeply madam

  • @soniaarora6162
    @soniaarora6162 2 роки тому

    It can be 7099

  • @RabiKundingi
    @RabiKundingi 5 місяців тому

    Tell me mother language

  • @waleyduniya335
    @waleyduniya335 6 місяців тому +1

    Yar galat English bol rahi ho shukria kam mari karo

  • @ysreddy3897
    @ysreddy3897 2 роки тому

    7099 it can be a prime

  • @nandhini.b1209
    @nandhini.b1209 2 роки тому +1

    7099 can be prime no.

  • @shikahabeeb3318
    @shikahabeeb3318 Рік тому

    Your fav sub mat you explaining easy ly

  • @RabiKundingi
    @RabiKundingi 5 місяців тому

    U know Hind madam

  • @jasnau8012
    @jasnau8012 Рік тому +1

    Njan karanam 130 likes

  • @anjupatel8824
    @anjupatel8824 Рік тому

    You deserve my like

  • @jasnau8012
    @jasnau8012 Рік тому

    😊😊😊😊

  • @reshmapraveen2369
    @reshmapraveen2369 8 місяців тому

    മലയാളം പറയമോ ❤️

  • @muhammadbinshahzad8820
    @muhammadbinshahzad8820 Рік тому

    Kia dimagh kharab to nhin Hai ap ye bol rhe ho ke hamein square root Lena Hai agr square root Lena Tha to uske liye calculator BHI hona chahiye Tha na aqal mand calculator se to Aram se batadein jab Khud Ki nhin Pata to video Bana ke bachon ke concept kiun kharab krte ho Bacha video dekh kr Hai or phir paper ke. Waqt woh bole ismein mereko calculator nhin Mila to woh to Barbaad hogaya na

  • @prabhatchhetri2997
    @prabhatchhetri2997 8 місяців тому

    Wtf

  • @technobee0092
    @technobee0092 2 роки тому +1

    Hii

  • @gdhdjdbsks
    @gdhdjdbsks 7 місяців тому

    Thank you thank you soooo much sooo much jiii😩🤍😭

  • @Dharmu21
    @Dharmu21 3 місяці тому

    108 can be a prime number