For what value of ‘K’ in 7n=K, ‘n’ will be a Natural number?

  1. 543
  2. 839
  3. 1983
  4. 2401

 

Anurag Mishra Professor Asked on 17th December 2015 in Maths.
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  • 1 Answer(s)

    Answer:  (4) 2401 

    Solution:-
    7^n = K

    The value of K will be multiple of 7 and only  option (4) 2401 is  multiple  of 7.
    Then factors of 2401 = 7 x 7 x 7 x 7 
     = 7^4
    7^4 = 2401

    Then the value of K is 2401. 

    Hence, the correct answer is option (4) 2401. 

    Anurag Mishra Professor Answered on 17th December 2015.
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