question_answer

The sum of the first three terms \[\mathbf{(}{{\mathbf{S}}_{\mathbf{3}}}\mathbf{)}\] of on A.P. is 108 and if it is given that \[{{\mathbf{a}}_{\mathbf{1}}}{{\mathbf{a}}_{\mathbf{2}}}+\text{ }{{\mathbf{S}}_{\mathbf{3}}}\]= 0 then find the value of its seventh term where \[{{a}_{1}},\text{ }{{a}_{2}}\] are first and second term of the A.P.

A) 225                  

B) 231     

C) 216                              

D) 229

E) None of these