Question

If 4^18 - 1 = 687194a6735 , then find the value of digit 'a'.

Answer 1

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THE ANSWER IS HERE,

=> 4^18 -1 =687194a6735

=>68719476736-1 =687194a6735

=> 68719476735 = 687194a6735.


So, a= 7.


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