Question

Tell formula of 9*8071 divisible by 11

Answer 1

Answer:

9x8071/11

9x 8071 = 72639

Now., to check divisibility by 11 we find sum of odd and even digits seperately

, Then we check if difference is 0 or 11 if it is then divisible by 11

For the above,

7+6+9 = 22

2+3 = 5

as 5 < 22

substracting 5 from 22

22-5 = 17

As 22-5 isn't zero or 11 , 9 x 8071 isn't divisible by 11