11th Class
Mathematics
Sequence and Series
Question Bank
Sequence and Series
question_answer
If \[{{\mathbf{S}}_{\mathbf{n}}}\]of a series is \[\frac{\mathbf{35n}}{\mathbf{2}}\mathbf{-}\frac{\mathbf{7}{{\mathbf{n}}^{\mathbf{2}}}}{\mathbf{2}}\] then find its 7th term.