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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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Prakash Singh Kushwaha

3 years ago

ईट पर नाच electron thomson proton rutherford neutron chadwick . thats how i survived my school ;-)

11

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Shubham Pankaj

5 months ago

mam I m having doubt in divisivility by 11

0

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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

Parveen Aggarwal

2 years ago

mam, 42567xy÷ 80

0

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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

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 :)