Monday
March 27, 2017

Post a New Question

Posted by on .

The number 3136 is the sum of the first how many odd whole numbers?

  • Math 543 - ,

    56

  • Math 543 - ,

    how did you solve

  • Math 543 - ,

    so we have
    1+3+5+7+... = 3136

    let the number of terms of this AS be n
    (n/2)(2a +(n-1)d) = Sum(n)
    So we have a=1, d=2 , and n = ?
    (n/2)(2 + (n-1)2) = 3136
    times 2 ....
    n(2 + 2n - 2) = 6272
    2n^2 = 6272
    n^2 = 3136
    n = ± 56 , but n has to be a positive whole number,

    there are 56 terms

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question