Question

find the 10th term form the end of an ap 8,10,12...126?

Answer 1

formula is { l-(n-1) d }   l is last term i.e. 126
=126-9*2 =108

Answer 2

Solution:
         Here common difference = 10 - 8 = 2
                     First Term = 8
        In A.P ,
             Nth term = first term + (term Number - 1 )*Common Difference
               here nth term = 10 ,
                       first term = 8
                        term number = 10
                       common difference = 2 ,

hence ,
          10th term   = 8 + (10 -1 )2
                           =8+9*2   
                           = 8 + 18
                           = 26

hence 10th term in the mentioned series is 26 .

Thank You!!