Question

If a four digit number A381 is divisible by 11 then find the smallest value for A( Natural number)

Answer 1

Given number $A381$ is divisible by 11.
If $(3+1)-(A+8)=0$ or 11
if A=7 then,
(3+1)-(7+8)= -11 which is a multiple of 11.
Therefore, A=7 is the smallest value such that the number A381 is divisible by 11.