Write a digit in the blank space of each of the following numbers so that the number formed is divisible by 11:
(a) 92 __ 389 (b) 8 __ 9484
(a) 92 __ 389
Sum of odd digits = 9 + blank space + 8 = 17 + blank space
Sum of even digits = 2 + 3 + 9 = 14
Number is divisible by 11 if the difference between the sum of the digits at odd places and the sum of the digits at even places is divisible by 11.
If we make sum of odd digits = 25 then we will have difference = 25 – 14 = 11 which is divisible by 11.
To make sum of odd digits = 25, number at black space would be 8.
(b) 8 __ 9484
Sum of odd digits = 8 + 9 + 8 = 25
Sum of even digits = blank space + 4 + 4 = blank space + 8
Number is divisible by 11 if the difference between the sum of the digits at odd places and the sum of the digits at even places is divisible by 11.
If we make sum of even digits = 14 then we will have difference = 25 – 14 = 11 which is divisible by 11.
To make sum of even digits = 14, number at black space would be 6.
Aman says
I am not getting this please explain more
Yuyuthsavgupta says
Ya I too
Anand says
Please explain me this sum again
Shonima says
Yes, I also did not quite did not understand it too.
Soo kindly repeat it pls.
And this time when you will do so plz explain it a bit child-friendly way
thank you –
regards
Shonima
Sneha ghosh says
Hey which is the answer?
I can’t understand and what is the meaning of blank space?
Muthu malai says
So easy no problem
Devyani says
I am not able to do the sum, please explain clearly
Buddha says
If you want to do this ask Santosh sir of apeejay school Nerul .he is the best teacher my child had. He still teaches tuere
Nubia Hodam says
I can’t understand what is explained
Muskaan Mathur says
I did not get how to do it so,I checked NCRT and understood the concept and answered my question.
Muskaan Mathur says
A positive reply
Reyan says
THANKS for the answer
Meera says
I don’t understand.
jumken romin says
what i don’t understand you did’nt answer at all dont need explainations
direct answer please