Topic

Finding the Sum using a Formula

The sum of n terms of an arithmetic sequence with a as its first term and l as its last term is given by \( \displaystyle{S}_{n} = \frac{n}{2}\Big[\text{2}{a} + {(n - 1)}d\Big] \).

Practice Questions

MB9403Q01 MB9403Q02a MB9403Q02b MB9403Q03 MB9403Q04a MB9403Q04b MB9403Q04c MB9403Q05a MB9403Q05b MB9403Q06 MB9403Q07a MB9403Q07b MB9403Q07c MB9403Q07d MB9403Q08 MB9403Q09 MB9403Q010