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CBSE Class 10 Answered

Find :                     The 10th term of -40, -15, 10, 35, ....
Asked by Topperlearning User | 08 Apr, 2014, 03:28: PM
answered-by-expert Expert Answer

Given A.P. is -40, -15, 10, 35,....

                    Here                  a1 = - 40

                    But                    a2 = a1 + d

                                       - 15 = - 40 + d                                           

                    or                      d = - 15 + 40 = 25

                                      

                                              =      - 40 + 9 x 25

                                              =      - 40 + 225 = 185

Answered by | 08 Apr, 2014, 05:28: PM

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