<P> The second way is by extension--that is, listing each member of the set . An extensional definition is denoted by enclosing the list of members in curly brackets: </P> <Dl> <Dd> C = (4, 2, 1, 3) </Dd> <Dd> D = (blue, white, red). </Dd> </Dl> <Dd> C = (4, 2, 1, 3) </Dd> <Dd> D = (blue, white, red). </Dd>

Give an example of set written in two ways