Number System Practice Test 4

A number is divisible by 11, if the sum of digits at even places – the sum of digits at odd places is either 0 or divisible by 11.
Now, 19,756 = 14 - 14 = 0
1,53,989 = 23 - 12 = 11
41,745 = 16 - 5 = 11
29,88,009 = 19 - 17 ≠ 0, 11.
Hence, it is not divisible by 11.
Also, 2,17,316 = 10 - 10 = 0.