If the \(n^{th}\) term of an A.P. is \(2n + 5\), find the sum of the first 10 terms.
Show Hint
If the \(n^{th}\) term of an A.P. is given as a linear expression \(An + B\), the common difference is always \(A\). You can also find the sum using \(S_n = \frac{n}{2}[2a + (n-1)d]\).