# Find the next three terms in the sequence {eq}3, 12, 21, 30,\cdot\cdot\cdot {/eq}

## Question:

Find the next three terms in the sequence {eq}3, 12, 21, 30,\cdot\cdot\cdot {/eq}

## Arithmetic Sequence:

{eq}\\ {/eq}

An arithmetic sequence is defined by two parameters, one is the first term {eq}(a) {/eq} of the sequence and second is a common difference {eq}(d) {/eq} or the difference between two successive terms {eq}(a_{n} - a_{n - 1}) {/eq}. The general form of an arithmetic sequence {eq}\Biggr[ a, \; (a + d), \; (a + 2d), \; (a + 3d), \; \cdots \cdots \Biggr] {/eq} will be used here in order to get the values of the next terms.