WARNING Math Mistakes in Sequences Could Cost You Grades

In the first question, we use the general term for an Arithmetic Progression to come up with two linear equations in terms of the unknowns which are the first term (a) and the common difference (d). In the second question, which is on convergent series, we first find the common ratio then we put it in the expression for convergence to obtain an Inequality to solve. @EndzeMathsSolutions