The Sum of First 84 Even Numbers is

  1. 7140
  2. 7540
  3. 6720
  4. 8832
Monis Rasool Professor Asked on 2nd June 2015 in Maths.
Add Comment
  • 1 Answer(s)

    Answer: (1) 7140
    Explanation:-
    First even number is 2,4,6,8, ………………………168

    The sum of first even number = 2 + 4 + 6 + ………………….+ 168
    Sum = (n/2) x (first number + last number)
    then, first number = 2  and last number = 168

    The sum of first 84 even number = (84/2) x (2 + 168)
    = 42 x 170 = 7140

    Hence, the sum of the first even number is 7140.

    Anurag Mishra Professor Answered on 2nd June 2015.
    Add Comment
  • Your Answer

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