Question

Test whether the following numbers are divisible by 11

1. 8260439
2. 8151
3. 4132

Answer 1

1. 8260439
   8+6+4+9= 27
         2+0+3= 5
   27-5= 22
   Divisible
2. 8151
   8+5=13
   1+1=2
   13-2= 11
   divisible
3. 4132
   4+3=7
   1+2=3
   7-3=4
   Not divisible