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Prove that 7^(n) - 6n - 1 is always divi...

Prove that `7^(n)` - 6n - 1 is always divisible by 36.

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Knowledge Check

  • If n is a natural number then 7^(3n) - 4^(3n) is always divisible by .....................

    A
    11
    B
    3
    C
    33
    D
    both 11 and 3

  • 49^(n)+16n-1 is divisible by

    A
    3
    B
    64
    C
    19
    D
    29

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