5445
5+4=9
4+5=9
9-9=0
yes it is divisible by 11
(b) 10824
1+8+4=13
0+2=2
13-2=11
yes it is divisible by 11
(c) 7138965
7+3+9+5=24
1+8+6=15
24-15=9
no,it is not divisible by 11
(d) 70169308
7+1+9+0=17
0+6+3+8=17
17-17=0
yes it is divisible by 11
(e) 1000001
0+0+0+1=1
1+0+0=1
1-1=0
yes it is divisible by 11
(f) 901153
9+1+5=15
0+1+3=4
15-4=11
yes it is divisible bye 11