Prime Number or Composite Number?? How to know if the number is prime or not?
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- Опубликовано: 4 окт 2024
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As u check n+1 or n-1,
Here seems n-1,n,n+1 consecutive so one must be divisible by 3
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
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.
I can't understand
😢😢i can also not understand
7099 can be a prime number
Excuse I wanted to know that how to know that till which number we have to take prime numbers for the prime factorization
Can u tell me a little fast I have a exam tomarrow
And how did 301 changed into 137
It's shown in the video till square root of the given number you have to take prime numbers
@@FastandEasyMaths thanks let me see
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.
No any number which is divisible by any other except itself or 1 is not a prime number
No two numbers that have a difference of 2 will BOTH be divisible by 3
Ma'am could you make videos on engineering mathematics and probability and statistics
Sure, will do so ASAP
@@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 .
Thanks Mam
Please Make Video On This Content ⬇️
7 multiply by 6 upon 8
Please!🥺🥺
42/8=21/4
Mam can you please make a vedio for me please only composite numbers please 🙏🙏🙏🙏🙏🙏🙏
*_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...._*
Perfect Surya 🥰
319 is subtracted by 1 = 318 is divisible by 3.
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 ??
It can be a prime
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.
@FastandEasyMaths
Actually, apart from 2 and 3 all prime numbers can be written in the form 6n+1 or 6n-1
Thank you so much mam for wonderful content..
My pleasure 😊
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??
No the truck also says all can be prime numbers, this trick actually helps you to discard numbers which surely are composite
Thankyou
how to find a square root of a number
8:00 357 is not prime 7x51=357
i made notes as you got the concept clear and the answer to DIY is = It can be a prime no.
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
12387 is divisible by 3 so it's not a prime number.
is 451 a prime number?? u check ur fomula is wrong
Not a prime number
451 is a 11 multiple
Is 1141 a prime number or not
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 🤔
I also can't understand 😢
Yar galat English bol rahi ho shukria kam mari karo
But for 49 it is not applicable.... As 48-1 divisible by 3.... But 49 is not prime
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
I know these tricks, but still watching your vedio.
Hahahaha you are so funny
Please tell then my exam is near😢
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.....
No it doesn't pls see the video fully
@@FastandEasyMaths Sorry for half cooked comments.... I apologize.
Explained well
hey loser 91 lets apply 91+1 =92 %3 is not equal to zero...its not a primenumber
thanks!
49 is odd and is still composite?
Yes, it is. Pls watch the video it's mentioned there properly😊
Yes mam, 7099 can be a prime number.
Thankyou so Much for the trick mam, It was phenomenal 😄💟
My pleasure 😊
नही अध्यापिका जी , 7099 कोई prime number नही है, इसके factors 1,229,31 और 7099 हैं।
What are you talking about ! This better be 5th grade math. I asked my sister in 7th grade and she does not know!
1009 is prime number but ur nethod says it can be composite number
1009 can be prime because 1008 is divisible by 2 and 3
Ma'am thank you for this content
My pleasure 😊
Thank you so much mam
My pleasure
Tell me deeply madam
Divisible ka word mujhe thora hindi me smjhayega phr mere ye smjh ajaega?
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
Thanks🙏
My pleasure
Illogical, for instance 247
Tell me mother language
7099 it can be a prime number
It can be 7099
😊😊😊😊
7099 it can be a prime
Njan karanam 130 likes
Your fav sub mat you explaining easy ly
7099 can be prime no.
U know Hind madam
No
മലയാളം പറയമോ ❤️
You deserve my like
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
Hii
Wtf
Thank you thank you soooo much sooo much jiii😩🤍😭
My pleasure 😊
108 can be a prime number
No it cannot be