The sum of 5 numbers in an Ap is 30 & sum of their squares is 220. find the third tern-

*** Plzzzzz solve with all steps ***

Dear Student!

Let five numbers in A.P. be a – 2d, ad, a, a + d and a + 2d.

Given (a – 2d) + (ad) + a + (a + d) + (a + 2d) = 30

Putting a = 6, we get

When a = 6 and d = 2, we get

when a = 6 and d = –2, we get

Five numbers in A.P. are 2, 4, 6, 8 and 10.

Thus, the third number is 6.

Cheers!

  • 7

 Options r 

  1. 5
  2. 6
  3. 7
  4. 8
  • -1

a  =   6

d  =  2

a3  =   10

  • 1
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