Have you noticed how the colours change in a traffic signal? The sequence of colour changes is shown below.

(a) Find the colour at positions \(96\), \(241\), and \(319\).
\(96\):
\(241\):
\(319\):
(b) Write expressions to describe the positions for each colour.
[Note: Let's take red as \('r'\), yellow as \('y'\) and green as \('g'\).]
Red:
Yellow:
Green: