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Chapter 2: Rules of Divisibility
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In this chapter, Binati has discussed the Divisibility rules of 2,3,4,5,6,7,8,9,10,11,12,16,19,25. These are all the numbers you will really need, competitive exams point of view.

Binati Sheth
An Avid Reader. A Teacher. An Aid worker. An Engineer (E&C). A Writer. Budding Art Connoisseur. A philomath. A Shōnen Otaku.

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(2)
U
Unacademy user
ईट पर नाच electron thomson proton rutherford neutron chadwick . thats how i survived my school ;-)
mam I m having doubt in divisivility by 11
Binati Sheth
5 months ago
May I know what your doubt is?
Shubham Pankaj
5 months ago
mam my doubt is in first step and second step
Shubham Pankaj
5 months ago
mam and pls upload some questions for divisibility rules,remainder
Binati Sheth
5 months ago
So I write number 230, digits 2 and 0 are on odd place. Digit 3 is on even place. For divisiblity of 11, Find the sum of the digits in the even places and the sum of the digits in the odd places. If the differences between the two sums is 0 or a multiple of 11, then the given number would be divisible by 11. For example, 72545. Digits in odd places - 7,5,5. Sum of these digits is 17 Digits in even places - 2,4. Sum of these two digits is 6. Difference between both the sums = 17 - 6 = 11. Thus sum is divisible by 11. Hence 72545 would be divisible by 11. I’ll try to make a course on that. Best of luck
Binati Sheth
2 years ago
80 = 2^4 x 5 so y will be 0 (because 5/2 not a whole number) and 67a0 will have to be divisible by 16 (2^4) so x is 2. Xy is 20.
Parveen Aggarwal
2 years ago
by 10×8 , kaise karenge
Binati Sheth
2 years ago
vaise kyun karna hai per?
Parveen Aggarwal
2 years ago
plz batao Na mam
Binati Sheth
2 years ago
Okay, 80 se karna ho toh 8x10.... 10 means y has to be 0.... 8 means last three numbers need to be divisible by 8 so 7xy needs to be divisible by 2^3 i.e. 8 so 7x0 has to be 720.... x=2,y=0
Parveen Aggarwal
2 years ago
but mam, khaan ye jata hai ki jab bhi 80 se divide karna ho to hum last digit Ko left karke , iske phle ki teen digit se hum check karenge for 8
Parveen Aggarwal
2 years ago
but mam, khaan ye jata hai ki jab bhi 80 se divide karna ho to hum last digit Ko left karke , iske phle ki teen digit se hum check karenge for 8
Parveen Aggarwal
2 years ago
but mam, khaan ye jata hai ki jab bhi 80 se divide karna ho to hum last digit Ko left karke , iske phle ki teen digit se hum check karenge for 8
Parveen Aggarwal
2 years ago
but mam, khaan ye jata hai ki jab bhi 80 se divide karna ho to hum last digit Ko left karke , iske phle ki teen digit se hum check karenge for 8
Binati Sheth
2 years ago
Toh vahi kiya na...
Parveen Aggarwal
2 years ago
to phir to 67x lenge Na hum
Binati Sheth
2 years ago
No, you need to consider the last digit. Instead of learning rules about 80, learn rules about 2, powers of 2, 5, etc... Just smaller basic numbers. Usko samjho. Appka kaam jaldi aur aasani se ho jaega
Parveen Aggarwal
2 years ago
okkkkk ji
Binati Sheth
2 years ago
good :)