Which of The Following Numbers is Not Divisible by 3?

  1. 3604218
  2. 1872516
  3. 1530729
  4. 3954278
Harsh Vardhan Professor Asked on 6th September 2015 in Maths.
Add Comment
  • 1 Answer(s)

    Answer: (4) 3954278

    Explanation:-
    Divisibility of 3 :-
    If the sum of the digits of the number is divisible by 3, that number is divisible by 3.

    Then, the sum of digits of 3604218 = 3 + 6 + 0 + 4 + 2 + 1 + 8
    = 24, 24 is the divisible by 3 then, the number is divisible by 3.

    Then, the sum of digits of 1872516 = 1 + 8 + 7 + 2 + 5 + 1 + 6
    = 30, 30 is divisible by 3 then, the number is divisible by 3.

    Then, the sum of the digits of 1530729 = 1 + 5 + 3 + 0 + 7 +  2 + 9
    = 27, 27 is divisible by 3 then, the number is divisible by 3.

    Then, the sum of digits of 3954278 = 3 + 9 + 5 + 4 + 2 + 7 + 8
    = 38, 38 is not divisible by 3 then, the number is not divisible by 3.

    Hence, the answer is (4) 3954278.

    Anurag Mishra Professor Answered on 8th September 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.