PRIME or COMPOSITE ? Check in 10 Seconds #cbse #icse #cbseboard #video #videos

Shortcuts to do calculations mentally, useful for developing numerical aptitude and for success in competitive examinations....here is an interesting method to check whether a given number is prime or composite.....too good for all junior students and for competitive exams.....for more such interesting videos, keep visiting:
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[syedmdabid]

Close perfect square rule:- it's useful upto 4 digit. For bigger no. We confuse and more time. 2- 6n+1, 6n--1 rule has been proven to be false.

[tirelesssoul]

Agarawal peoples are legend that's why im using Dr. R.S Agarwal's Elementry Book for competitive exams, it's perfect helping me alot.

[SuperHuman]

Another Solution :: Take a number say p square it p*p subtract 1 from p*p now divide by 24 if it divided its prime. That's it. Formula is p is prime if [(p*p)-1] ➗ 24=0 then p is a prime number. Only Exception cases where p is 2 & 3.

[himadrithaker]

Thanks sir, it helps my 9 years old daughter to clear her concepts.

[ajaykumarchoudhary]

sir you are excellent
this is my second time i am watching your video
i just understood that you are an exllent teacher

[dipakshah]

Sir can you make a video for more larger number becz it is in our 10th ncert syllabus sir if you do it it will be very kind of yours

[khushbooaggarwal]

Thankyou so much sir. With your help and guidance, I am able to solve these type of questions.

[prakashchandradash]

I saw this method and now i am in a curious way to like this hard sums thanks Mr Agarwal

[nahlaafrin]

Thank you, clear and easy to understand video.

[nehamakkar]

This method is fabulous, i saw so many videos but mujh end me aa hi nhi rha tha .thank you sir

[nassrrwe]

Hi .. lam 60 years old now
I wich the know you 40 years befor
Thanks alot

[jyotishridhar]

Amazing method to check a number whether its prime or composite👍

[sangeetabehera]

Thnk u sir....for explng the concept in supr way

[ppscpreparationwithhammad]

Best video i have seen so far for prime numbers

[jahanzaibalibutt]

thanks sir, it is going to help me in my next math quiz

[nakshthegreat]

Sir if the square is coming same as the the number given then what to do

[k.annaya]

aaaa thankyouu so much, this is really helpful

[DinbharK]

Sir ye rule 25 ke liye check kiye to 5 ka square hai to 2, 3 se check karna tha to in dono se 25 nhi divide hua but 25 to prime number nhi hai

[miniflipper]

what an amazing method, I never heard of it