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CBSE Class 10 Answered

The first term of an A.P. is 5 and its 100th term is –292.  Find the 50th term of this A.P.
Asked by Topperlearning User | 08 Apr, 2014, 03:19: PM
answered-by-expert Expert Answer

Let the A.P. be

            Here,                         a1 = 5

                                             

            We have                   

                                          

                                        

                                         d = –3

            Also                         

                                                                                  

                                           50th term is –142.

 

Answered by | 08 Apr, 2014, 05:19: PM

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