Can we solve the linear equations for a and d?
Using \\( S_{n}=\\frac{n}{2}[First term+ Last term] \\)
Can we put in the value of sum and use inverse operation to solve for d?
Can we make an AP, where a=11, and the common difference is 11?
Recall the formula of sum when the last term is given.
Using nth and sum of nth formula.
By using the formula of sum of nth term.