Question

A number of the form ((10)^n) -1 is always divisible by 11 for every n is a natural number, when?​

Answer 1

Answer:

10^n-1

Step-by-step explanation:

is always divisible by 11 for every natural number when it ends 0 except zero .

for example .,

10^10-1=100-1=99

99 is divisible by 11

10^20-1=......