1.

1 ते n नैसर्गिक सम संख्यांची बेरीज 462 आहे, तर n ची किंमत काढा.​

Answer»

Step-by-step EXPLANATION:

Given If the sum of n natural even numbers is 462, then find the value of n.

  • Let SN be the sum of  numbers.
  • So the first even natural numbers are 2,4,6,8,10…………n
  • here a = 2, d = 2
  • So we have Sn = n/2 (2a + (n – 1)d)
  •                  462 = n/2 ( 2(2) + (n – 1) 2)
  •                 462 = n/2 (4 + 2N – 2)
  •                 462 = n/2 (2 + 2n)
  •                             2n^2 + 2n – 924 = 0
  •                        n^2 + n – 462 = 0
  •                       n^2 + 22n – 21n – 462 = 0
  •                        n(n + 22) – 21 (n + 22) = 0
  •                         (n + 22) (n – 21) = 0
  •                           n = - 22, 21
  •    So the value of n is 21

Reference link will be

brainly.in/question/8464091#


Discussion

No Comment Found

Related InterviewSolutions