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  1. The number (10n-1) is divisible by 11 for ?
    1. All Values of n
    2. Odd values of n
    3. Even values of n
    4. n = multiples of 11
Correct Option: C

For even values of n, the number (10n - 1 ) consists of even numbers of nines and hence it will be divisible by 11.


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