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Write the expression  for the A.P. :  Hence find the common difference of the A.P. for which         

            (i)    11th term is 5 and 13th term is 79

Asked by Topperlearning User 4th June 2014, 1:23 PM
Answered by Expert
Answer:

 

                    = 

                    =  nd – kd

                    =  (n – k) d

            (i)   

                                     79 – 5 = (13 – 11) d

                                    

Answered by Expert 4th June 2014, 3:23 PM
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