Question

If a 4 digit number a381 is divisible by 11 what is value of a

Answer 1

Answer is 7 that is 7881

Answer 2

A divisibility rule of 11 is altlernate + and - should be 11

example- 2728 = 2-7+2-8 = -11

it is divisible by 11

so 2728 is divisible by 11

Now given a381

= a-3+8-1 =11

a+4=11

a= 11-4

a=7

so the number is 7381 is divisible by 11