Number System || Divisibility Rule (LESSON-2) Tricks to Learn

#FeelFreetoLearn

[depthmaths]

Divisibility rule :

2 ➡️ abcd is a number
If d = even or zero
Then abcd is divisible by 2

3➡️ abcd is a number
If a+b+c+d = n, n is divisible by 3
Then abcd is divisible by 3

4➡️ abcd is a number
If cd is divisible by 4
Then abcd is divisible by 4

5 ➡️ abcd is a number
If d = 5 or zero
Then abcd is divisible by 5

6 ➡️ abcd is a number
If abcd is divisible by 2, 3
Then abcd is divisible by 6

7 ➡️ abcd is a number
If d×2 = 2d, abc - 2d = n
& n is divisible by 7
Then abcd is divisible by 7

8 ➡️ abcd is a number
If bcd is divisible by 8
Then abcd is divisible by 8

9 ➡️ abcd is a number
If a+b+c+d = n, n is divisible by 9
Then abcd is divisible by 9

10 ➡️ abcd is a number
If d = 0
Then abcd is divisible by 10


11➡️ abcd is a number
If a, b is odd, a+ b = n
& c, d is even, c + d = m
n - m = k, k is divisible by 11
Then abcd is divisible by 11

12➡️ abcd is a number
If abcd is divisible by 3, 4
Then abcd is divisible by 12

13➡️ abcd is a number
If d × 4=4d, abc + 4d = n,
& n is divisible by 13
Then abcd is divisible by 13

14 ➡️ abcd is a number
If abcd is divisible by 7, 2
Then abcd is divisible by 14

15 ➡️ abcd is a number
If abcd is divisible by 3, 5
Then abcd is divisible by 15

16 ➡️ abcde is a number
If bcde is divisible by 16
Then abcde is divisible by 16

17 ➡️ abcd is a number
If d×5 = 5 d, abc - 5d = n
& n is divisible by 17
Then abcd is divisible by 17

18 ➡️ abcd is a number
If abcd is divisible by 2, 9
Then abcd is divisible by 18

19➡️ abcd is a number
If If d×2 = 2d, abc + 2d = n
& n is divisible by 19
Then abcd is divisible by 19


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[josmejoseph]

I always recommend FFL for all my friends.. because your teaching way is entirely different from other faculties. There are many lectures in YouTube but they all took classes in Hindi but FFL provide as good class with English.. Thank you sir

[vandanamajji]

Hi everyone I observed one thing in this video that sir forgot to say about divisibility rule of 16 or the clip might be missing.
So I want to mention it here
The divisibility rule of 16 is
Add last 2 digits to 4 times the rest. The result must be divided by 16.
Eg: 176 ==> 76+(1*4) ==>80/16=5
So the given no. is divisible by 16.

Hope this is useful

[sasankh]

video uploaded 2 years ago, but will be useful forever. this is called quality content. thank you sir. this video helped me in self study.

[Arunkrsingh-ufmx]

i have never seen a teacher teaching with that ease . you really love teaching. you made subject look easy

[MohanRaj-puqe]

And it is to be noted that, for number 11, divisibility rule is, the difference between the addition of odd-placed digits and the addition of even-placed digits should be either zero or should be divisible by 11. For eg: the number 2804857 whose difference becomes zero when the said rule is applied.

[pavanmudhole]

23:16 how do you categerize 1 in even number ? it is odd number

[heheawu]

Tbh you're the first maths teacher whose teaching i can grasp it easily. I used to almost byheart and solved maths during my high school days but now im able to understand the concept clearly from your simple yet meticulous explaination. Thankyou so much🎉

[madhumathisenthilkumar]

Seriously amazing teaching and explanation sir... Thank you so much for guiding us to grow up.. Your videos are so so helpful

[Nutrifithome]

Sir rule for 11 you take 9174, add all even num and add all odd num like that you will teach then you add even for 1and 4 will be odd number sir

[devarajmendon]

Sir, I hope divisibility rule for 11 should be odd place digits instead of odd digits

[navyamanohara]

Sir, 1 is odd number. How did you add 1 as an even number in 11th division?

[sarupups]

sir u have missed the short trick for the number"16" in this video

[PrinceSingh-gkqf]

Sir, please make a tutorial of "Ratio & Proportion" topic from beginners to Advance.

[mynameisrakesh]

How many members want marthon classes each topic in aptitude and reasoning just request to sir and share

[thokchomnungshithoi]

I am very lucky to find this channel . I don't find any maths classes in english medium. Thank u so much sir. U help me a lot for my ssc cgl preparation.

[dwarakagongati]

last rule(11)- 1 is odd digit how can you count it as a even digit?

[charansaianisetti]

For 11 divisibility the numbers 9174 is divisible by 11 but while following the procedure 1 is also comes under odd number then 9+1+7=17 and even number is so 17-4=13 and 13 is not divisible by 11

[jyotishetiye]

Sir, Your teaching skill is awesome. Here you forget to tell us about the divisibility rule for 16

[all_in_one_shorts]

In 11 divisible
Ex: 639154
20-8=12
12 is not divisible by 11
Frnds check it once.