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Best rule of 7 Take any number like 161 Multiply of unit digit by 2 161=1*2=2 And next steps Minus from left number 16-2=14 Hence it's division of 7 Or if 0comes Like 147 7*2=14 147= 14-14=0 Hence it's also division of 7
The faster trick for divisibility of 13 is in the first step subtracting from the number of 3 last digit the number of rest of digits or subtracting the last 3 digits from the 3 first digits (generally the lesser number from the bigger number). The second step is multiplying the last digit by 4 and adding the product to the number of the rest digits: 764361 764 - 361 = 403 and 3 x 4 =12 and 40+12=52 14352 352 - 14 = 338 and 8 x 4 = 32 and 33+32 = 65
@Patel Ashu kya bachcho wali baat kar rahe bhai... wo sahi hai kyunki tumhari he baat le mai timer laga ker kiya aur inke trick se pehle divide karke aa gaya.
Logics: 7 ke table mein end mein 9 aaye esa value! 49. As we are moving unit digit, isliye 49 ke hisaabse 50 hoga, toh unit digit ko move karke multiple by 5 Same way, 13 ke table mein unit digit mein 9 aane wala number, 39. Same as previous, moving unit digit isliye 39 ka 40 hoga aur isliye multiply by 4. 17 mein 17x7 119, unit digit ke 1 ko add kiya toh 120, uss hisaab se multiply by 12. Baaki sabke bhi iss logic se bann jaate hai. Trick jo hai woh achchi hai magar logically samajh aa jaaye jo trick woh zyada yaad bhi rehti hai aur kabhi bhool jao toh khudse re-structure bhi kar sakte hai.
Very helpful video sir! Amazing work! An alternative for divisibility by 17 Multiply unit digit of any no. by 5 and subtract it from the remaining part
Divisibility by 7, Easiest rule. ---------------------------------------- Let no given is 3983. Extract last 3 digits of given no. i.e. 983 and then subtract remaining part of original no from this. i.e. 983 -3 = 980 , multiple of 7, as 14 * 7 = 98. 2nd Example . : 6237.. here 237 - 6 = 231, which is divisible by 7 as 231 = 7 * 33. Hope this works.
Your divisible rule for 17 is more tedious will be easy when you multiply unit digit by 5 and subtract from remaining digit where for example 34 it's solutions is 3-4*5=-17 which is divisible by 17
sir itwas a nice session nad really thankful to u , u made these videos at free of cost, so that everyone can avail it........... but inthesetype of question supposed to checkdivsisbility in each option as we have to multiply each number unit digitwith a specific term and do thesame process wth eah option available plz do revert sir ..... reallythakns for the videos
For divisibility check of 7 ----> (rest of the digits) - unit digit × 2 If that no. Is divisible by 7 then your digit is divisible by 7. For example - 217 :- 21 - 7×2 = 21-14 = 7 and 7 is divisible by 7 hence 217 is divisible by 7.
Thank you sir, sir ye divisibility rule me number hai usme 7, 13,17,19,23,29 ka 5,4,12,2,23 ye he number kyu leye aur ye number kaise pta lagta he ke divisibility nekalne ke leye kau sa number multiply hoga aagar pata hoga to hum aur bhe number ke divisibility nekal skte hai sir
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Best rule of 7
Take any number like 161
Multiply of unit digit by 2
161=1*2=2
And next steps
Minus from left number
16-2=14
Hence it's division of 7
Or if 0comes
Like 147
7*2=14
147=
14-14=0
Hence it's also division of 7
Wowww 👍
@@preetigodara7560 much better
Thanks
@jeetraj chouhan thank you so much bro...
Very helpful. 🌸
Very lenthy process for competitive exams .
तो जो रूल है वो तो है ही
U won't have time 🤣
The faster trick for divisibility of 13 is in the first step subtracting from the number of 3 last digit the number of rest of digits or subtracting the last 3 digits from the 3 first digits (generally the lesser number from the bigger number). The second step is multiplying the last digit by 4 and adding the product to the number of the rest digits:
764361
764 - 361 = 403 and 3 x 4 =12 and 40+12=52
14352
352 - 14 = 338 and 8 x 4 = 32 and 33+32 = 65
Bhai shab ......7 ke rule m .....itni der m to hum vese hi bhag krke dhek lenege 😁😆😆
@Patel Ashu kya bachcho wali baat kar rahe bhai... wo sahi hai kyunki tumhari he baat le mai timer laga ker kiya aur inke trick se pehle divide karke aa gaya.
@Anshika Agrawal haa sukriya..... afsos mujhe pta h ye 😀
@Anshika Agrawal thanks didi 😀
Ha
Six
Bhut hi axa h aur sral tarika h sir thanu soooo much
King of maths...Sahil sir...thnk you sir..
Sahi bola Kajal ji
best teacher ever
Nice sir ye method bahut acha aur bahut saral hai 👍👍👍👍👍👍
Kon kon ye video 🙋 2020 👍👍👍👍
Me Dekh rha hai
👇👇👇
😜
Mai
@@priyaSingh-fm3zx hii
Ma
Me
Divisible by 10 kya hoga samjhae to hai bahut badhiya🎉🎉🎉
Sir app prblm ko aasan nhi aur tough bnate hai 😁😄
Tq sir... Maza a gya....
Esi hi video bnate rhe 👍👍
No prachar between vdo salute!!
😔🤣😊😊😢😚😍😚😚
Very nice easy trick
Divisibility rule of 7
3983= 398-3*2=392
392=39-2*2=39-4=35
Multiply last digit with 2 instead of 5 then less from remaining no.
Pagal
@@kartikhegadi7574 kon ho tum
F
Better
Seed no concept
Sir bahoti a66a trik hain..... mujhe bohot a66a laga sir....
Kon kon ये video 2019 m dkh rha h🙏👆👍👍👍👍👍❤️और किसको sahil sir से पढ़ना accha lgta h👌👌👌🙏
Aur koi kam nhi h y likhne k siva
Maine 2/10/2019 Ko dekha hai
I m
M bhi abi dekhi h
Sahil sir hoples hai es vidio me
Pehle ap sir ese dekhate the😍😍amazing
I wish i could give 1000 likes. This video cleared all my doubts. Thanks sir
A made re chot like1000
Right bro
@@ManojKumar-cc1xr nhi yrr
Nice sir ji ... thank you so much
Sir all prime number ki divisibility check krne k liye ek mathod bnao na
Nice to meet you again shahil sir
Unbelievable teaching method
Logics:
7 ke table mein end mein 9 aaye esa value!
49.
As we are moving unit digit, isliye 49 ke hisaabse 50 hoga, toh unit digit ko move karke multiple by 5
Same way, 13 ke table mein unit digit mein 9 aane wala number, 39. Same as previous, moving unit digit isliye 39 ka 40 hoga aur isliye multiply by 4.
17 mein 17x7 119, unit digit ke 1 ko add kiya toh 120, uss hisaab se multiply by 12.
Baaki sabke bhi iss logic se bann jaate hai.
Trick jo hai woh achchi hai magar logically samajh aa jaaye jo trick woh zyada yaad bhi rehti hai aur kabhi bhool jao toh khudse re-structure bhi kar sakte hai.
Excellent Sir 👍👍👍👍👍
the easiest way for divisibility of 7 is- double the last digit and subtract it from the ramaining digits.
Are didi🙏🙏
Not useful when we have 5 digit or 6 digit & greater no.
Fastest method for divisibility of 7 is just divide the number by 7. (If u don't believe me, u can try it by yourself) 😎
Thx sir 🙌🏻
Thanku soooo much sir aap ko parmeshwar khush rkhy or lambii Umar de (aamen🙏)
Amen
Ap mere se nikah krlo apko me khush rakhunga
Thanks sir.....
Very helpful video sir! Amazing work!
An alternative for divisibility by 17
Multiply unit digit of any no. by 5 and subtract it from the remaining part
I use the same method bro
@@chauhansanjayraj8781 acha mtlb ap keh rhe ho ki 5 se multiply kre or baad me subtract kr de 5 ko , 17 k rule me
@@yogi9784
Ex - 34
4×5=20
20-3=17
Hence it is divisible
Lovely Sir ..................Achha pdhate toooo
Pahle aap ese dikhte the sir wow😂😂😂😂😂😂😂
😂😂😂😂😂😂
Same reaction:-)))
Same innocent shahil sir😂
😂😂😂
🤣
You are a great teacher sahil Sir
🙏🙏
Nice video sir ji thank you
Legendary concept thank you so much❤❤❤❤❤
Lajavab trick sir ka hai mja agaya
Divisibility by 7, Easiest rule.
----------------------------------------
Let no given is 3983.
Extract last 3 digits of given no. i.e. 983 and then subtract remaining part of original no from this. i.e. 983 -3 = 980 , multiple of 7, as 14 * 7 = 98.
2nd Example . : 6237.. here 237 - 6 = 231, which is divisible by 7 as 231 = 7 * 33.
Hope this works.
Great thanq
Does not work on 5 digit no's.
@@zaynmalik953 give me example
This method works for 13 also
Very nice 👌👌👌 sir boht acha trick thanks very so much 👍👍👍👍
Nice!
Very useful video 😍😊👍
Big fan of your teaching sir!!
Thank you. Sir.
Bahut bahut dhanyabaad gurudev ji
Bachhe lag rahe hain sir...thank u sir
Thank you sir. It is very helpful for me.
Thanks for vdo sir
Your divisible rule for 17 is more tedious will be easy when you multiply unit digit by 5 and subtract from remaining digit where for example 34 it's solutions is 3-4*5=-17 which is divisible by 17
Is it applicable in 51
शानदार प्रदर्शन
And Now This channel and Sir, both are Now Big brand and Grouped with UNACADEMY 🔥🔥🔥🔥🔥
Superb sir 👌👌👌....
Perfect tricks....
👍👍
I was having lot of confusion 😬 before but really you did a great job sir 👍✌️👍👍👍👍👍👍👍👍👍✌️
Nice
Nice
Nice
Top
Nice
Nice, Top, good 🌃 👶
Helpful very much
Thanks for this 7 13....divisibility rule.
Thnak u sir🙂🙂
Great concept thank you sir g
Thanks sir
बहुत समय ले रहे हो सर ये कोई ट्रिक नहीं है इससे भी जबरदस्त ट्रिक maths masti chanal पर है 3 सेकंड से पहले उत्तर 😜😜😜
Thanks for your help sir
Ok
Superb sir 👍👍👍👍👍👍👍
Thanks for such an amazing video 🙏🙏 . It's very helpful for me .
Video. Simplicity ke liye banaya he yaa aur intricate karne ke liye🙄
this trick is so easy and thank you for ur video
Thoda dheere bhai
Awesome trick..Thank u sir
If there two digits number has unit digit is
(x - 1) and decade digit is (x + 1) then what will be number ?
11 X + 9
Thnx bhaiya g. Bht impotant knowledge di h apne. Bahut problem hota tha isme
Bhai isse to accha 7 se direct divide krke dekhle
Itna lamba process krne ki Kya jarrut h
7 divisibility test = suppose 623 3*2 =6 62-6 =56
Easy mathod
6237
LAST 3 DIGIT MINUS REMAINING DIGIT
237-6=231
DIVID BY 7
TRUE
Right pkaa diya master ne
@@dineshkumarsharma3474 सर, कृपया विस्तार से समझाइए!कि
623 3*2=662-6=56
Thank you sir
nice and important for us video
this concept is really helpful becuse we need not remember the sign changes
no one is here in this world as you are ....Sir apka tod nhi
If we apply your role to 6237
Then at the next step 105
10+5×1=15
And 15 is not divisible by 7
10+(5*5) = 35 divisible by 7
It is divisible as per the rule sir discussed in this video.
10 me 25 add karna hai na ki 5 lol 🤣🤣🤣
Very helpful video sir 👌👌
Sir isse achhaa to divide krke dekh lenge
Innocent sir....😂😂
😂
😂😂
Ye baat bhi sahi h.😅
Thank you so much Sir.
sir itwas a nice session nad really thankful to u , u made these videos at free of cost, so that everyone can avail it...........
but inthesetype of question supposed to checkdivsisbility in each option
as we have to multiply each number unit digitwith a specific term and do thesame process wth eah option available
plz do revert sir ..... reallythakns for the videos
Bhut badiya sir
Thanks❤️
Waooo guru ji 🙏🙏
if 1y3y6 is divisible by 11 and the find value 'y' plz solve this ques.opations (a)6 (b) 1 (c) 2 (d)5
5
5
Y=5
6+3+1=10-(y+y)=0 divisible by 11 So value of Y is 5
For divisibility check of 7 ----> (rest of the digits) - unit digit × 2
If that no. Is divisible by 7 then your digit is divisible by 7. For example - 217 :- 21 - 7×2 = 21-14 = 7 and 7 is divisible by 7 hence 217 is divisible by 7.
Respected Sir, why we multiply by 5 why not -2 for divisibility of 7
aap sir se ulta sawal nahi kar sakte
Jab 2 se multiply karenge to last me minus karna padega
smart lag rhe hai sir..
Thank you sir, sir ye divisibility rule me number hai usme 7, 13,17,19,23,29 ka 5,4,12,2,23 ye he number kyu leye aur ye number kaise pta lagta he ke divisibility nekalne ke leye kau sa number multiply hoga aagar pata hoga to hum aur bhe number ke divisibility nekal skte hai sir
These numbers are Oscelators.
Ey
105 div. By 7 rule not followed..
yes its followed.
105----> 10+ 25 = 35 = divisible
Bhut bhut achhi lgi aapki vedio sir
Thanks 😊
Video hota hai
Thanks sir I don't know how I Express my feelings
Wooo very ny sir tqq so e🙏🙏🙏
Jitne mai 5 se multiply kr kr kai add krenge itne mai divide he kr lenge...
Sahi kahan 😅😂😂😂😂
Ha mai bhi soch rha tha🤣🤣🤣
sir .. bott lambba process he essa kuch btao dekhte hee ptta chl jaye .. kii kis se divide hogaa yaa 2-3 step m ho jaye
Maths masti chanal dekho maza aa jayega 1 second me answer
Thanks sir apka trick bahat acha hai
Is method se fast to simply ho jayega sir
I have understand
Very nice sir
Find the biggest number of 7 digit which is exactly divisible by 999
9999990
As per my opinion no one is better than Sahil sir Sahil Sir is the best
2020 1st attemp in cgl ? Anyone
I will first attempt ssc cgl in 2020
@@bikashpramanik5185 how's is your preparation going on
fine
Also me..
Thanks sr g and bahut hi achha pdate hai sr g
Thank you sir,but what rule we would apply for other prime numbers
Very helpful Vedio
very gd magic trick
Thanks Samal for your valuable feedback, Share with your friends also. Happy Learning...!
Wow sir kia Trick hai thank you so much sir
For 17, multiplying by 5 and subtracting is easier sir or atleast, if we dont know table of 12 😜
Example plz
U r correct. .easier